Reduce casting for operations processing (#12002)

modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenConfig.java

@@ -29,6 +29,7 @@ import org.openapitools.codegen.meta.FeatureSet;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.util.List;
@@ -194,7 +195,7 @@ public interface CodegenConfig {
 
     ModelsMap postProcessModels(ModelsMap objs);
 
-    Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels);
+    OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels);
 
     Map<String, Object> postProcessSupportingFileData(Map<String, Object> objs);
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java

@@ -40,6 +40,7 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.serializer.SerializerUtils;
 import org.openapitools.codegen.templating.MustacheEngineAdapter;
 import org.openapitools.codegen.templating.mustache.*;
@@ -810,7 +811,7 @@ public class DefaultCodegen implements CodegenConfig {
     // override with any special post-processing
     @Override
     @SuppressWarnings("static-method")
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         return objs;
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java

@@ -44,8 +44,11 @@ import org.openapitools.codegen.languages.PythonClientCodegen;
 import org.openapitools.codegen.languages.PythonExperimentalClientCodegen;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
+import org.openapitools.codegen.model.ApiInfoMap;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.serializer.SerializerUtils;
 import org.openapitools.codegen.templating.CommonTemplateContentLocator;
 import org.openapitools.codegen.templating.GeneratorTemplateContentLocator;
@@ -541,7 +544,7 @@ public class DefaultGenerator implements Generator {
     }
 
     @SuppressWarnings("unchecked")
-    void generateApis(List<File> files, List<Object> allOperations, List<ModelMap> allModels) {
+    void generateApis(List<File> files, List<OperationsMap> allOperations, List<ModelMap> allModels) {
         if (!generateApis) {
             // TODO: Process these anyway and present info via dryRun?
             LOGGER.info("Skipping generation of APIs.");
@@ -566,7 +569,7 @@ public class DefaultGenerator implements Generator {
             try {
                 List<CodegenOperation> ops = paths.get(tag);
                 ops.sort((one, another) -> ObjectUtils.compare(one.operationId, another.operationId));
-                Map<String, Object> operation = processOperations(config, tag, ops, allModels);
+                OperationsMap operation = processOperations(config, tag, ops, allModels);
                 URL url = URLPathUtils.getServerURL(openAPI, config.serverVariableOverrides());
                 operation.put("basePath", basePath);
                 operation.put("basePathWithoutHost", removeTrailingSlash(config.encodePath(url.getPath())));
@@ -595,9 +598,8 @@ public class DefaultGenerator implements Generator {
                 if (config.vendorExtensions().containsKey("x-group-parameters")) {
                     boolean isGroupParameters = Boolean.parseBoolean(config.vendorExtensions().get("x-group-parameters").toString());
 
-                    Map<String, Object> objectMap = (Map<String, Object>) operation.get("operations");
-                    @SuppressWarnings("unchecked")
-                    List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+                    OperationMap objectMap = operation.getOperations();
+                    List<CodegenOperation> operations = objectMap.getOperation();
                     for (CodegenOperation op : operations) {
                         if (isGroupParameters && !op.vendorExtensions.containsKey("x-group-parameters")) {
                             op.vendorExtensions.put("x-group-parameters", Boolean.TRUE);
@@ -617,7 +619,7 @@ public class DefaultGenerator implements Generator {
                 processMimeTypes(swagger.getProduces(), operation, "produces");
                 */
 
-                allOperations.add(new HashMap<>(operation));
+                allOperations.add(operation);
 
                 addAuthenticationSwitches(operation);
 
@@ -746,14 +748,13 @@ public class DefaultGenerator implements Generator {
         generateVersionMetadata(files);
     }
 
-    @SuppressWarnings("unchecked")
-    Map<String, Object> buildSupportFileBundle(List<Object> allOperations, List<ModelMap> allModels) {
+    Map<String, Object> buildSupportFileBundle(List<OperationsMap> allOperations, List<ModelMap> allModels) {
 
         Map<String, Object> bundle = new HashMap<>(config.additionalProperties());
         bundle.put("apiPackage", config.apiPackage());
 
-        Map<String, Object> apis = new HashMap<>();
-        apis.put("apis", allOperations);
+        ApiInfoMap apis = new ApiInfoMap();
+        apis.setApis(allOperations);
 
         URL url = URLPathUtils.getServerURL(openAPI, config.serverVariableOverrides());
 
@@ -887,7 +888,7 @@ public class DefaultGenerator implements Generator {
         List<ModelMap> allModels = new ArrayList<>();
         generateModels(files, allModels, filteredSchemas);
         // apis
-        List<Object> allOperations = new ArrayList<>();
+        List<OperationsMap> allOperations = new ArrayList<>();
         generateApis(files, allOperations, allModels);
 
         // supporting files
@@ -1170,11 +1171,11 @@ public class DefaultGenerator implements Generator {
         return parameter.getName() + ":" + parameter.getIn();
     }
 
-    private Map<String, Object> processOperations(CodegenConfig config, String tag, List<CodegenOperation> ops, List<ModelMap> allModels) {
-        Map<String, Object> operations = new HashMap<>();
-        Map<String, Object> objs = new HashMap<>();
-        objs.put("classname", config.toApiName(tag));
-        objs.put("pathPrefix", config.toApiVarName(tag));
+    private OperationsMap processOperations(CodegenConfig config, String tag, List<CodegenOperation> ops, List<ModelMap> allModels) {
+        OperationsMap operations = new OperationsMap();
+        OperationMap objs = new OperationMap();
+        objs.setClassname(config.toApiName(tag));
+        objs.setPathPrefix(config.toApiVarName(tag));
 
         // check for operationId uniqueness
         Set<String> opIds = new HashSet<>();
@@ -1187,9 +1188,9 @@ public class DefaultGenerator implements Generator {
             }
             opIds.add(opId);
         }
-        objs.put("operation", ops);
+        objs.setOperation(ops);
 
-        operations.put("operations", objs);
+        operations.setOperation(objs);
         operations.put("package", config.apiPackage());
 
         Set<String> allImports = new ConcurrentSkipListSet<>();
@@ -1201,10 +1202,10 @@ public class DefaultGenerator implements Generator {
         Set<Map<String, String>> imports = toImportsObjects(mappings);
 
         //Some codegen implementations rely on a list interface for the imports
-        operations.put("imports", imports.stream().collect(Collectors.toList()));
+        operations.setImports(new ArrayList<>(imports));
 
         // add a flag to indicate whether there's any {{import}}
-        if (imports.size() > 0) {
+        if (!imports.isEmpty()) {
             operations.put("hasImport", true);
         }
 
@@ -1239,18 +1240,14 @@ public class DefaultGenerator implements Generator {
      * @return The set of unique imports
      */
     private Set<Map<String, String>> toImportsObjects(Map<String, String> mappedImports) {
-        Set<Map<String, String>> result = new TreeSet<Map<String, String>>(
-                (Comparator<Map<String, String>>) (o1, o2) -> {
-                    String s1 = o1.get("classname");
-                    String s2 = o2.get("classname");
-                    return s1.compareTo(s2);
-                }
+        Set<Map<String, String>> result = new TreeSet<>(
+            Comparator.comparing(o -> o.get("classname"))
         );
 
-        mappedImports.entrySet().forEach(mapping -> {
+        mappedImports.forEach((key, value) -> {
             Map<String, String> im = new LinkedHashMap<>();
-            im.put("import", mapping.getKey());
-            im.put("classname", mapping.getValue());
+            im.put("import", key);
+            im.put("classname", value);
             result.add(im);
         });
         return result;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractAdaCodegen.java

@@ -36,6 +36,8 @@ import org.openapitools.codegen.meta.features.SecurityFeature;
 import org.openapitools.codegen.meta.features.WireFormatFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -607,9 +609,9 @@ abstract public class AbstractAdaCodegen extends DefaultCodegen implements Codeg
 
     @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
 
         for (CodegenOperation op1 : operationList) {
             if (op1.summary != null) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractCSharpCodegen.java

@@ -27,6 +27,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.*;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -663,12 +665,12 @@ public abstract class AbstractCSharpCodegen extends DefaultCodegen implements Co
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
         if (objs != null) {
-            Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+            OperationMap operations = objs.getOperations();
             if (operations != null) {
-                List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+                List<CodegenOperation> ops = operations.getOperation();
                 for (CodegenOperation operation : ops) {
 
                     // Check return types for collection

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractDartCodegen.java

@@ -12,6 +12,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -560,11 +562,11 @@ public abstract class AbstractDartCodegen extends DefaultCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation op : ops) {
                 if (op.hasConsumes) {
                     if (!op.formParams.isEmpty() || op.isMultipart) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractEiffelCodegen.java

@@ -26,6 +26,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -362,11 +364,9 @@ public abstract class AbstractEiffelCodegen extends DefaultCodegen implements Co
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation operation : operations) {
             // http method verb conversion (e.g. PUT => Put)
 
@@ -374,7 +374,7 @@ public abstract class AbstractEiffelCodegen extends DefaultCodegen implements Co
         }
 
         // remove model imports to avoid error
-        List<Map<String, String>> imports = (List<Map<String, String>>) objs.get("imports");
+        List<Map<String, String>> imports = objs.getImports();
         if (imports == null)
             return objs;
 
@@ -401,7 +401,7 @@ public abstract class AbstractEiffelCodegen extends DefaultCodegen implements Co
         }
 
         // recursively add import for mapping one type to multiple imports
-        List<Map<String, String>> recursiveImports = (List<Map<String, String>>) objs.get("imports");
+        List<Map<String, String>> recursiveImports = objs.getImports();
         if (recursiveImports == null)
             return objs;
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractFSharpCodegen.java

@@ -27,6 +27,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.*;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -512,12 +514,12 @@ public abstract class AbstractFSharpCodegen extends DefaultCodegen implements Co
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
         if (objs != null) {
-            Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+            OperationMap operations = objs.getOperations();
             if (operations != null) {
-                List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+                List<CodegenOperation> ops = operations.getOperation();
                 for (CodegenOperation operation : ops) {
 
                     // Check return types for collection

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractGoCodegen.java

@@ -24,6 +24,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -462,11 +464,9 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
 
         for (CodegenOperation operation : operations) {
             // http method verb conversion (e.g. PUT => Put)
@@ -474,7 +474,7 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
         }
 
         // remove model imports to avoid error
-        List<Map<String, String>> imports = (List<Map<String, String>>) objs.get("imports");
+        List<Map<String, String>> imports = objs.getImports();
         if (imports == null)
             return objs;
 
@@ -565,7 +565,7 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
         }
 
         // recursively add import for mapping one type to multiple imports
-        List<Map<String, String>> recursiveImports = (List<Map<String, String>>) objs.get("imports");
+        List<Map<String, String>> recursiveImports = objs.getImports();
         if (recursiveImports == null)
             return objs;
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractGraphQLCodegen.java

@@ -21,6 +21,8 @@ import io.swagger.v3.oas.models.media.Schema;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -421,10 +423,10 @@ public abstract class AbstractGraphQLCodegen extends DefaultCodegen implements C
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
 
-        for (CodegenOperation op : (List<CodegenOperation>) objs.get("operation")) {
+        for (CodegenOperation op : objs.getOperation()) {
             // non GET/HEAD methods are mutation
             if (!"GET".equals(op.httpMethod.toUpperCase(Locale.ROOT)) && !"HEAD".equals(op.httpMethod.toUpperCase(Locale.ROOT))) {
                 op.vendorExtensions.put("x-is-mutation", Boolean.TRUE);
@@ -440,7 +442,7 @@ public abstract class AbstractGraphQLCodegen extends DefaultCodegen implements C
             }
         }
 
-        return objs;
+        return operations;
     }
 
     public String graphQlInputsPackage() {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java

@@ -38,6 +38,8 @@ import org.openapitools.codegen.languages.features.DocumentationProviderFeatures
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -1362,10 +1364,10 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         // Remove imports of List, ArrayList, Map and HashMap as they are
         // imported in the template already.
-        List<Map<String, String>> imports = (List<Map<String, String>>) objs.get("imports");
+        List<Map<String, String>> imports = objs.getImports();
         Pattern pattern = Pattern.compile("java\\.util\\.(List|ArrayList|Map|HashMap)");
         for (Iterator<Map<String, String>> itr = imports.iterator(); itr.hasNext(); ) {
             String itrImport = itr.next().get("import");
@@ -1374,8 +1376,8 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
             }
         }
 
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             Collection<String> operationImports = new ConcurrentSkipListSet<>();
             for (CodegenParameter p : op.allParams) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaJAXRSServerCodegen.java

@@ -25,6 +25,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.languages.features.BeanValidationFeatures;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -168,12 +170,11 @@ public abstract class AbstractJavaJAXRSServerCodegen extends AbstractJavaCodegen
     }
 
     @Override
-    @SuppressWarnings("unchecked")
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> updatedObjs = jaxrsPostProcessOperations(objs);
-        Map<String, Object> operations = (Map<String, Object>) updatedObjs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationsMap updatedObjs = jaxrsPostProcessOperations(objs);
+        OperationMap operations = updatedObjs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation co : ops) {
                 handleImplicitHeaders(co);
             }
@@ -181,13 +182,11 @@ public abstract class AbstractJavaJAXRSServerCodegen extends AbstractJavaCodegen
         return updatedObjs;
     }
 
-    static Map<String, Object> jaxrsPostProcessOperations(Map<String, Object> objs) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    static OperationsMap jaxrsPostProcessOperations(OperationsMap objs) {
+        OperationMap operations = objs.getOperations();
         String commonPath = null;
         if (operations != null) {
-            @SuppressWarnings("unchecked")
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 if (operation.hasConsumes == Boolean.TRUE) {
                     Map<String, String> firstType = operation.consumes.get(0);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPhpCodegen.java

@@ -24,6 +24,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -703,9 +705,9 @@ public abstract class AbstractPhpCodegen extends DefaultCodegen implements Codeg
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             // for API test method name
             // e.g. public function test{{vendorExtensions.x-testOperationId}}()

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonConnexionServerCodegen.java

@@ -32,8 +32,11 @@ import io.swagger.v3.oas.models.security.SecurityScheme;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
+import org.openapitools.codegen.model.ApiInfoMap;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -465,13 +468,11 @@ public abstract class AbstractPythonConnexionServerCodegen extends AbstractPytho
         }
     }
 
-    @SuppressWarnings("unchecked")
-    private static List<Map<String, Object>> getOperations(Map<String, Object> objs) {
-        List<Map<String, Object>> result = new ArrayList<Map<String, Object>>();
-        Map<String, Object> apiInfo = (Map<String, Object>) objs.get("apiInfo");
-        List<Map<String, Object>> apis = (List<Map<String, Object>>) apiInfo.get("apis");
-        for (Map<String, Object> api : apis) {
-            result.add((Map<String, Object>) api.get("operations"));
+    private static List<OperationMap> getOperations(Map<String, Object> objs) {
+        List<OperationMap> result = new ArrayList<>();
+        ApiInfoMap apiInfo = (ApiInfoMap) objs.get("apiInfo");
+        for (OperationsMap api : apiInfo.getApis()) {
+            result.add(api.getOperations());
         }
         return result;
     }
@@ -483,9 +484,9 @@ public abstract class AbstractPythonConnexionServerCodegen extends AbstractPytho
             opsByPath.put(op.path, op);
         }
 
-        List<Map<String, Object>> opsByPathList = new ArrayList<Map<String, Object>>();
+        List<Map<String, Object>> opsByPathList = new ArrayList<>();
         for (Map.Entry<String, Collection<CodegenOperation>> entry : opsByPath.asMap().entrySet()) {
-            Map<String, Object> opsByPathEntry = new HashMap<String, Object>();
+            Map<String, Object> opsByPathEntry = new HashMap<>();
             opsByPathList.add(opsByPathEntry);
             opsByPathEntry.put("path", entry.getKey());
             opsByPathEntry.put("operation", entry.getValue());
@@ -570,9 +571,8 @@ public abstract class AbstractPythonConnexionServerCodegen extends AbstractPytho
         generateJSONSpecFile(objs);
         generateYAMLSpecFile(objs);
 
-        for (Map<String, Object> operations : getOperations(objs)) {
-            @SuppressWarnings("unchecked")
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+        for (OperationMap operations : getOperations(objs)) {
+            List<CodegenOperation> ops = operations.getOperation();
 
             List<Map<String, Object>> opsByPathList = sortOperationsByPath(ops);
             operations.put("operationsByPath", opsByPathList);
@@ -645,9 +645,9 @@ public abstract class AbstractPythonConnexionServerCodegen extends AbstractPytho
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
 
         for (CodegenOperation operation : operationList) {
             Map<String, String> skipTests = new HashMap<>();

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Apache2ConfigCodegen.java

@@ -20,6 +20,8 @@ package org.openapitools.codegen.languages;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -88,18 +90,17 @@ public class Apache2ConfigCodegen extends DefaultCodegen implements CodegenConfi
         return input.replace("*/", "*_/").replace("/*", "/_*");
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
-        List<CodegenOperation> newOpList = new ArrayList<CodegenOperation>();
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
+        List<CodegenOperation> newOpList = new ArrayList<>();
 
         for (CodegenOperation op : operationList) {
             String path = op.path;
 
             String[] items = path.split("/", -1);
-            List<String> splitPath = new ArrayList<String>();
+            List<String> splitPath = new ArrayList<>();
             for (String item : items) {
                 if (item.matches("^\\{(.*)\\}$")) {
                     item = "*";
@@ -113,9 +114,10 @@ public class Apache2ConfigCodegen extends DefaultCodegen implements CodegenConfi
                 if (!foundInNewList) {
                     if (op1.path.equals(op.path)) {
                         foundInNewList = true;
+                        @SuppressWarnings("unchecked")
                         List<CodegenOperation> currentOtherMethodList = (List<CodegenOperation>) op1.vendorExtensions.get("x-codegen-otherMethods");
                         if (currentOtherMethodList == null) {
-                            currentOtherMethodList = new ArrayList<CodegenOperation>();
+                            currentOtherMethodList = new ArrayList<>();
                         }
                         op.operationIdCamelCase = op1.operationIdCamelCase;
                         currentOtherMethodList.add(op);
@@ -127,7 +129,7 @@ public class Apache2ConfigCodegen extends DefaultCodegen implements CodegenConfi
                 newOpList.add(op);
             }
         }
-        operations.put("operation", newOpList);
+        operations.setOperation(newOpList);
         return objs;
     }
 }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AspNetCoreServerCodegen.java

@@ -24,6 +24,8 @@ import io.swagger.v3.parser.util.SchemaTypeUtil;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
@@ -462,13 +464,13 @@ public class AspNetCoreServerCodegen extends AbstractCSharpCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
         // We need to postprocess the operations to add proper consumes tags and fix form file handling
         if (objs != null) {
-            Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+            OperationMap operations = objs.getOperations();
             if (operations != null) {
-                List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+                List<CodegenOperation> ops = operations.getOperation();
                 for (CodegenOperation operation : ops) {
                     if (operation.consumes == null) {
                         continue;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ClojureClientCodegen.java

@@ -27,6 +27,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -354,9 +356,9 @@ public class ClojureClientCodegen extends DefaultCodegen implements CodegenConfi
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
-        List<CodegenOperation> ops = (List<CodegenOperation>) objs.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
+        List<CodegenOperation> ops = objs.getOperation();
         for (CodegenOperation op : ops) {
             // Convert httpMethod to lower case, e.g. "get", "post"
             op.httpMethod = op.httpMethod.toLowerCase(Locale.ROOT);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ConfluenceWikiCodegen.java

@@ -23,6 +23,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.apache.commons.lang3.StringUtils;
 
@@ -117,9 +119,9 @@ public class ConfluenceWikiCodegen extends DefaultCodegen implements CodegenConf
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             op.httpMethod = op.httpMethod.toLowerCase(Locale.ROOT);
         }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppPistacheServerCodegen.java

@@ -26,6 +26,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -255,14 +257,13 @@ public class CppPistacheServerCodegen extends AbstractCppCodegen {
         return op;
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        String classname = (String) operations.get("classname");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        String classname = operations.getClassname();
         operations.put("classnameSnakeUpperCase", underscore(classname).toUpperCase(Locale.ROOT));
         operations.put("classnameSnakeLowerCase", underscore(classname).toLowerCase(Locale.ROOT));
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             boolean consumeJson = false;
             boolean isParsingSupported = true;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppQtAbstractCodegen.java

@@ -7,6 +7,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -310,12 +312,11 @@ public abstract class CppQtAbstractCodegen extends AbstractCppCodegen implements
 
 
     @Override
-    @SuppressWarnings("unchecked")
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
 
-        List<Map<String, String>> imports = (List<Map<String, String>>) objs.get("imports");
+        List<Map<String, String>> imports = objs.getImports();
         Map<String, CodegenModel> codegenModels = new HashMap<>();
 
         for (ModelMap moObj : allModels) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppRestSdkClientCodegen.java

@@ -29,6 +29,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 
 import java.util.*;
@@ -322,11 +324,10 @@ public class CppRestSdkClientCodegen extends AbstractCppCodegen {
     }
 
     // override with any special post-processing
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             for (String hdr : op.imports) {
                 if (importMapping.containsKey(hdr)) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CppRestbedServerCodegen.java

@@ -24,6 +24,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 
 import java.io.File;
@@ -282,11 +284,10 @@ public class CppRestbedServerCodegen extends AbstractCppCodegen {
         return toApiName(name);
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         List<CodegenOperation> newOpList = new ArrayList<>();
 
         for (CodegenOperation op : operationList) {
@@ -318,6 +319,7 @@ public class CppRestbedServerCodegen extends AbstractCppCodegen {
                     if (op1.path.equals(op.path)) {
                         foundInNewList = true;
                         final String X_CODEGEN_OTHER_METHODS = "x-codegen-other-methods";
+                        @SuppressWarnings("unchecked")
                         List<CodegenOperation> currentOtherMethodList = (List<CodegenOperation>) op1.vendorExtensions.get(X_CODEGEN_OTHER_METHODS);
                         if (currentOtherMethodList == null) {
                             currentOtherMethodList = new ArrayList<>();
@@ -332,7 +334,7 @@ public class CppRestbedServerCodegen extends AbstractCppCodegen {
                 newOpList.add(op);
             }
         }
-        operations.put("operation", newOpList);
+        operations.setOperation(newOpList);
         return objs;
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CrystalClientCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.PrefixWithHashLambda;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -556,9 +558,9 @@ public class CrystalClientCodegen extends DefaultCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        OperationMap operations = objs.getOperations();
         HashMap<String, CodegenModel> modelMaps = new HashMap<>();
         HashMap<String, Integer> processedModelMaps = new HashMap<>();
 
@@ -567,7 +569,7 @@ public class CrystalClientCodegen extends DefaultCodegen {
             modelMaps.put(m.classname, m);
         }
 
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             for (CodegenParameter p : op.allParams) {
                 p.vendorExtensions.put("x-crystal-example", constructExampleCode(p, modelMaps, processedModelMaps));

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/CsharpNetcoreFunctionsServerCodegen.java

@@ -23,6 +23,8 @@ import io.swagger.v3.parser.util.SchemaTypeUtil;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
@@ -393,13 +395,13 @@ public class CsharpNetcoreFunctionsServerCodegen extends AbstractCSharpCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
         // We need to postprocess the operations to add proper consumes tags and fix form file handling
         if (objs != null) {
-            Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+            OperationMap operations = objs.getOperations();
             if (operations != null) {
-                List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+                List<CodegenOperation> ops = operations.getOperation();
                 for (CodegenOperation operation : ops) {
                     if (operation.consumes == null) {
                         continue;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/DartDioClientCodegen.java

@@ -25,6 +25,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.ClientModificationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.ProcessUtils;
 import org.slf4j.Logger;
@@ -264,10 +266,10 @@ public class DartDioClientCodegen extends AbstractDartCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
 
         Set<Map<String, Object>> serializers = new HashSet<>();
         Set<String> resultImports = new HashSet<>();
@@ -303,6 +305,7 @@ public class DartDioClientCodegen extends AbstractDartCodegen {
             }
         }
 
+        // for some reason "import" structure is changed ..
         objs.put("imports", resultImports.stream().sorted().collect(Collectors.toList()));
         objs.put("serializers", serializers);
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/DartDioNextClientCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.ClientModificationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.ProcessUtils;
 import org.slf4j.Logger;
@@ -295,10 +297,10 @@ public class DartDioNextClientCodegen extends AbstractDartCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList =  operations.getOperation();
 
         Set<String> resultImports = new HashSet<>();
 
@@ -365,6 +367,7 @@ public class DartDioNextClientCodegen extends AbstractDartCodegen {
             }
         }
 
+        // for some reason "import" structure is changed ..
         objs.put("imports", resultImports.stream().sorted().collect(Collectors.toList()));
 
         return objs;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/DartJaguarClientCodegen.java

@@ -22,6 +22,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 
 import io.swagger.v3.oas.models.media.*;
@@ -245,11 +247,11 @@ public class DartJaguarClientCodegen extends AbstractDartCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
 
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
 
         Set<String> modelImports = new HashSet<>();
         Set<String> fullImports = new HashSet<>();

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElixirClientCodegen.java

@@ -28,6 +28,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -298,9 +300,9 @@ public class ElixirClientCodegen extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) super.postProcessOperationsWithModels(objs, allModels).get("operations");
-        List<CodegenOperation> os = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = super.postProcessOperationsWithModels(objs, allModels).getOperations();
+        List<CodegenOperation> os = operations.getOperation();
         List<ExtendedCodegenOperation> newOs = new ArrayList<>();
         Pattern pattern = Pattern.compile("\\{([^\\}]+)\\}([^\\{]*)");
         for (CodegenOperation o : os) {
@@ -332,7 +334,7 @@ public class ElixirClientCodegen extends DefaultCodegen implements CodegenConfig
 
             newOs.add(eco);
         }
-        operations.put("operation", newOs);
+        operations.setOperation(newOs);
         return objs;
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ElmClientCodegen.java

@@ -28,6 +28,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -359,10 +361,10 @@ public class ElmClientCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    @SuppressWarnings({"static-method", "unchecked"})
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
-        List<CodegenOperation> ops = (List<CodegenOperation>) objs.get("operation");
+    @SuppressWarnings("static-method")
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
+        List<CodegenOperation> ops = objs.getOperation();
         ops.forEach(op -> {
             op.allParams = op.allParams.stream().sorted(new ParameterSorter()).collect(Collectors.toList());
             op.responses.forEach(response -> {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangClientCodegen.java

@@ -23,6 +23,8 @@ import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.JoinWithCommaLambda;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -309,10 +311,10 @@ public class ErlangClientCodegen extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> os = (List<CodegenOperation>) operations.get("operation");
-        List<ExtendedCodegenOperation> newOs = new ArrayList<ExtendedCodegenOperation>();
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> os = operations.getOperation();
+        List<ExtendedCodegenOperation> newOs = new ArrayList<>();
         Pattern pattern = Pattern.compile("\\{([^\\}]+)\\}");
         for (CodegenOperation o : os) {
             // force http method to lower case
@@ -322,7 +324,7 @@ public class ErlangClientCodegen extends DefaultCodegen implements CodegenConfig
                 o.returnType = "[" + o.returnBaseType + "]";
             }
 
-            ArrayList<String> pathTemplateNames = new ArrayList<String>();
+            ArrayList<String> pathTemplateNames = new ArrayList<>();
             Matcher matcher = pattern.matcher(o.path);
             StringBuffer buffer = new StringBuffer();
             while (matcher.find()) {
@@ -341,7 +343,7 @@ public class ErlangClientCodegen extends DefaultCodegen implements CodegenConfig
             eco.setPathTemplateNames(pathTemplateNames);
             newOs.add(eco);
         }
-        operations.put("operation", newOs);
+        operations.setOperation(newOs);
         return objs;
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangProperCodegen.java

@@ -23,6 +23,8 @@ import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -368,9 +370,9 @@ public class ErlangProperCodegen extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> os = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> os = operations.getOperation();
         List<ExtendedCodegenOperation> newOs = new ArrayList<>();
         Pattern pattern = Pattern.compile("\\{([^\\}]+)\\}");
         for (CodegenOperation o : os) {
@@ -397,7 +399,7 @@ public class ErlangProperCodegen extends DefaultCodegen implements CodegenConfig
             }
             newOs.add(eco);
         }
-        operations.put("operation", newOs);
+        operations.setOperation(newOs);
         return objs;
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ErlangServerCodegen.java

@@ -20,6 +20,8 @@ package org.openapitools.codegen.languages;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -270,9 +272,9 @@ public class ErlangServerCodegen extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             if (op.path != null) {
                 op.path = op.path.replaceAll("\\{(.*?)\\}", ":$1");

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoClientCodegen.java

@@ -29,6 +29,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.ProcessUtils;
 import org.slf4j.Logger;
@@ -456,10 +458,10 @@ public class GoClientCodegen extends AbstractGoCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        HashMap<String, CodegenModel> modelMaps = new HashMap<String, CodegenModel>();
+        OperationMap operations = objs.getOperations();
+        HashMap<String, CodegenModel> modelMaps = new HashMap<>();
         HashMap<String, ArrayList<Integer>> processedModelMaps = new HashMap<>();
 
         for (ModelMap modelMap : allModels) {
@@ -467,7 +469,7 @@ public class GoClientCodegen extends AbstractGoCodegen {
             modelMaps.put(m.classname, m);
         }
 
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             for (CodegenParameter p : op.allParams) {
                 p.vendorExtensions.put("x-go-example", constructExampleCode(p, modelMaps, processedModelMaps));
@@ -670,4 +672,4 @@ public class GoClientCodegen extends AbstractGoCodegen {
         }
         return "*" + goImportAlias + ".New" + toModelName(model) + "(" + StringUtils.join(propertyExamples, ", ") + ")";
     }
-}
+}

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoEchoServerCodegen.java

@@ -21,6 +21,8 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.util.Arrays;
@@ -107,11 +109,11 @@ public class GoEchoServerCodegen extends AbstractGoCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
 
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             if (op.path != null) {
                 op.path = op.path.replaceAll("\\{(.*?)\\}", ":$1");

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoGinServerCodegen.java

@@ -23,6 +23,8 @@ import org.openapitools.codegen.CodegenType;
 import org.openapitools.codegen.SupportingFile;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -122,11 +124,11 @@ public class GoGinServerCodegen extends AbstractGoCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
 
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             if (op.path != null) {
                 op.path = op.path.replaceAll("\\{(.*?)\\}", ":$1");

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GoServerCodegen.java

@@ -22,6 +22,8 @@ import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -286,14 +288,12 @@ public class GoServerCodegen extends AbstractGoCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
 
-        List<Map<String, String>> imports = (List<Map<String, String>>) objs.get("imports");
+        List<Map<String, String>> imports = objs.getImports();
         if (imports == null)
             return objs;
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/GroovyClientCodegen.java

@@ -33,6 +33,8 @@ import org.openapitools.codegen.meta.features.SchemaSupportFeature;
 import org.openapitools.codegen.meta.features.SecurityFeature;
 import org.openapitools.codegen.meta.features.WireFormatFeature;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 
 public class GroovyClientCodegen extends AbstractJavaCodegen {
@@ -126,9 +128,9 @@ public class GroovyClientCodegen extends AbstractJavaCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
-        List<CodegenOperation> ops = (List<CodegenOperation>) objs.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
+        List<CodegenOperation> ops = objs.getOperation();
         for (CodegenOperation op : ops) {
             // Overwrite path to map variable with path parameters
             op.path = op.path.replace("{", "${");

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/HaskellHttpClientCodegen.java

@@ -30,6 +30,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -809,10 +811,10 @@ public class HaskellHttpClientCodegen extends DefaultCodegen implements CodegenC
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> ret = super.postProcessOperationsWithModels(objs, allModels);
-        HashMap<String, Object> pathOps = (HashMap<String, Object>) ret.get("operations");
-        ArrayList<CodegenOperation> ops = (ArrayList<CodegenOperation>) pathOps.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationsMap ret = super.postProcessOperationsWithModels(objs, allModels);
+        OperationMap pathOps = ret.getOperations();
+        List<CodegenOperation> ops = pathOps.getOperation();
         if (ops.size() > 0) {
             ops.get(0).vendorExtensions.put(VENDOR_EXTENSION_X_HAS_NEW_TAG, true);
         }
@@ -827,7 +829,7 @@ public class HaskellHttpClientCodegen extends DefaultCodegen implements CodegenC
                 m.vendorExtensions.put(VENDOR_EXTENSION_X_MIME_TYPES, mimeTypes);
 
                 if ((boolean) additionalProperties.get(PROP_GENERATE_FORM_URLENCODED_INSTANCES) && mimeTypes.contains("MimeFormUrlEncoded")) {
-                    Boolean hasMimeFormUrlEncoded = true;
+                    boolean hasMimeFormUrlEncoded = true;
                     for (CodegenProperty v : m.vars) {
                         if (!(v.isPrimitiveType || v.isString || v.isDate || v.isDateTime)) {
                             hasMimeFormUrlEncoded = false;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCXFClientCodegen.java

@@ -24,6 +24,7 @@ import org.openapitools.codegen.languages.features.GzipTestFeatures;
 import org.openapitools.codegen.languages.features.LoggingTestFeatures;
 import org.openapitools.codegen.languages.features.UseGenericResponseFeatures;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -166,7 +167,7 @@ public class JavaCXFClientCodegen extends AbstractJavaCodegen
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
         return AbstractJavaJAXRSServerCodegen.jaxrsPostProcessOperations(objs);
     }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaCXFExtServerCodegen.java

@@ -38,6 +38,8 @@ import org.openapitools.codegen.SupportingFile;
 import org.openapitools.codegen.languages.features.CXFExtServerFeatures;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.JsonCache;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.JsonCache.CacheException;
@@ -1161,17 +1163,17 @@ public class JavaCXFExtServerCodegen extends JavaCXFServerCodegen implements CXF
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> result = super.postProcessOperationsWithModels(objs, allModels);
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationsMap result = super.postProcessOperationsWithModels(objs, allModels);
 
         if (generateOperationBody) {
             // We generate the operation body in code because the logic to do so is far too complicated to be expressed
             // in the logic-less Mustache templating system.
 
             @SuppressWarnings("unchecked")
-            Map<String, Object> operations = (Map<String, Object>) result.get("operations");
+            OperationMap operations = result.getOperations();
             if (operations != null) {
-                String classname = (String) operations.get("classname");
+                String classname = operations.getClassname();
 
                 // Map the models so we can look them up by name.
                 Map<String, CodegenModel> models = new HashMap<>();
@@ -1181,8 +1183,7 @@ public class JavaCXFExtServerCodegen extends JavaCXFServerCodegen implements CXF
                 }
 
                 StringBuilder buffer = new StringBuilder();
-                @SuppressWarnings("unchecked")
-                List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+                List<CodegenOperation> ops = operations.getOperation();
                 for (CodegenOperation op : ops) {
                     applyDefaultContentTypes(op);
                     String testDataPath = '/' + classname + '/' + op.operationId;
@@ -1246,16 +1247,16 @@ public class JavaCXFExtServerCodegen extends JavaCXFServerCodegen implements CXF
                 // did not include the ones we've just added to support the code in the operation bodies. Therefore it
                 // is necessary to recompute the imports and overwrite the existing ones. The code below was copied from
                 // the private DefaultGenerator.processOperations() method to achieve this end.
-                Set<String> allImports = new TreeSet<String>();
+                Set<String> allImports = new TreeSet<>();
                 for (CodegenOperation op : ops) {
                     allImports.addAll(op.imports);
                 }
                 allImports.add("List");
                 allImports.add("Map");
 
-                List<Map<String, String>> imports = new ArrayList<Map<String, String>>();
+                List<Map<String, String>> imports = new ArrayList<>();
                 for (String nextImport : allImports) {
-                    Map<String, String> im = new LinkedHashMap<String, String>();
+                    Map<String, String> im = new LinkedHashMap<>();
                     String mapping = importMapping().get(nextImport);
                     if (mapping == null) {
                         mapping = toModelImport(nextImport);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaClientCodegen.java

@@ -29,6 +29,8 @@ import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.meta.features.GlobalFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.CaseFormatLambda;
 import org.openapitools.codegen.utils.ProcessUtils;
 import org.slf4j.Logger;
@@ -635,14 +637,13 @@ public class JavaClientCodegen extends AbstractJavaCodegen
         }
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
         if (RETROFIT_2.equals(getLibrary())) {
-            Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+            OperationMap operations = objs.getOperations();
             if (operations != null) {
-                List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+                List<CodegenOperation> ops = operations.getOperation();
                 for (CodegenOperation operation : ops) {
                     if (operation.hasConsumes == Boolean.TRUE) {
 
@@ -680,8 +681,8 @@ public class JavaClientCodegen extends AbstractJavaCodegen
 
         // camelize path variables for Feign client
         if (FEIGN.equals(getLibrary())) {
-            Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-            List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+            OperationMap operations = objs.getOperations();
+            List<CodegenOperation> operationList = operations.getOperation();
             Pattern methodPattern = Pattern.compile("^(.*):([^:]*)$");
             for (CodegenOperation op : operationList) {
                 String path = op.path;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaInflectorServerCodegen.java

@@ -25,6 +25,8 @@ import org.openapitools.codegen.config.GlobalSettings;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -130,7 +132,7 @@ public class JavaInflectorServerCodegen extends AbstractJavaCodegen {
         }
         List<CodegenOperation> opList = operations.get(basePath);
         if (opList == null) {
-            opList = new ArrayList<CodegenOperation>();
+            opList = new ArrayList<>();
             operations.put(basePath, opList);
         }
         opList.add(co);
@@ -138,10 +140,10 @@ public class JavaInflectorServerCodegen extends AbstractJavaCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 if (operation.returnType == null) {
                     operation.returnType = "Void";

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautAbstractCodegen.java

@@ -7,6 +7,8 @@ import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.meta.features.SecurityFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.util.*;
 import java.util.stream.Collectors;
@@ -318,14 +320,14 @@ public abstract class JavaMicronautAbstractCodegen extends AbstractJavaCodegen i
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
 
         Map<String, CodegenModel> models = allModels.stream()
                 .map(ModelMap::getModel)
                 .collect(Collectors.toMap(v -> v.classname, v -> v));
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
 
         for (CodegenOperation op : operationList) {
             // Set whether body is supported in request

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaMicronautServerCodegen.java

@@ -4,6 +4,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.StringUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -185,12 +187,12 @@ public class JavaMicronautServerCodegen extends JavaMicronautAbstractCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
 
         // Add the controller classname to operations
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        String controllerClassname = StringUtils.camelize(controllerPrefix + "_" + operations.get("pathPrefix") + "_" + controllerSuffix);
+        OperationMap operations = objs.getOperations();
+        String controllerClassname = StringUtils.camelize(controllerPrefix + "_" + operations.getPathPrefix() + "_" + controllerSuffix);
         objs.put("controllerClassname", controllerClassname);
 
         List<CodegenOperation> allOperations = (List<CodegenOperation>) operations.get("operation");

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaPKMSTServerCodegen.java

@@ -25,6 +25,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.URLPathUtils;
 
 import java.io.File;
@@ -311,12 +313,11 @@ public class JavaPKMSTServerCodegen extends AbstractJavaCodegen {
                 serviceName + "IT.java"));
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (final CodegenOperation operation : ops) {
                 List<CodegenResponse> responses = operation.responses;
                 if (responses != null) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaPlayFrameworkCodegen.java

@@ -23,6 +23,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.languages.features.BeanValidationFeatures;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -305,11 +307,11 @@ public class JavaPlayFrameworkCodegen extends AbstractJavaCodegen implements Bea
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
 
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
 
                 for (CodegenParameter param : operation.allParams) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaUndertowServerCodegen.java

@@ -23,6 +23,8 @@ import org.openapitools.codegen.config.GlobalSettings;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -120,10 +122,10 @@ public class JavaUndertowServerCodegen extends AbstractJavaCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 if (operation.returnType == null) {
                     operation.returnType = "Void";

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaVertXServerCodegen.java

@@ -28,6 +28,8 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.URLPathUtils;
 
 import org.slf4j.Logger;
@@ -191,11 +193,11 @@ public class JavaVertXServerCodegen extends AbstractJavaCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> newObjs = super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) newObjs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationsMap newObjs = super.postProcessOperationsWithModels(objs, allModels);
+        OperationMap operations = newObjs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 operation.httpMethod = operation.httpMethod.toLowerCase(Locale.ROOT);
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavaVertXWebServerCodegen.java

@@ -21,6 +21,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.util.*;
@@ -126,13 +128,12 @@ public class JavaVertXWebServerCodegen extends AbstractJavaCodegen {
         }
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> newObjs = super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) newObjs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationsMap newObjs = super.postProcessOperationsWithModels(objs, allModels);
+        OperationMap operations = newObjs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 operation.httpMethod = operation.httpMethod.toLowerCase(Locale.ROOT);
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptApolloClientCodegen.java

@@ -29,6 +29,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -908,13 +910,13 @@ public class JavascriptApolloClientCodegen extends DefaultCodegen implements Cod
 
     @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         // Generate and store argument list string of each operation into
         // vendor-extension: x-codegen-argList.
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        OperationMap operations = objs.getOperations();
 
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 List<String> argList = new ArrayList<>();
                 boolean hasOptionalParams = false;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClientCodegen.java

@@ -28,6 +28,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -969,15 +971,14 @@ public class JavascriptClientCodegen extends DefaultCodegen implements CodegenCo
         return Arrays.asList(primitives).contains(type);
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         // Generate and store argument list string of each operation into
         // vendor-extension: x-codegen-argList.
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        OperationMap operations = objs.getOperations();
 
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 List<String> argList = new ArrayList<>();
                 boolean hasOptionalParams = false;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/JavascriptClosureAngularClientCodegen.java

@@ -24,6 +24,7 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -272,16 +273,10 @@ public class JavascriptClosureAngularClientCodegen extends DefaultCodegen implem
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        if (objs.get("imports") instanceof List) {
-            List<Map<String, String>> imports = (ArrayList<Map<String, String>>)objs.get("imports");
-            Collections.sort(imports, new Comparator<Map<String, String>>() {
-                public int compare(Map<String, String> o1, Map<String, String> o2) {
-                    return o1.get("import").compareTo(o2.get("import"));
-                }
-            });
-            objs.put("imports", imports);
-        }
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        List<Map<String, String>> imports = objs.getImports();
+        imports.sort(Comparator.comparing(o -> o.get("import")));
+        objs.put("imports", imports);
         return objs;
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinClientCodegen.java

@@ -35,6 +35,8 @@ import org.openapitools.codegen.meta.features.SecurityFeature;
 import org.openapitools.codegen.meta.features.WireFormatFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ProcessUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -767,12 +769,11 @@ public class KotlinClientCodegen extends AbstractKotlinCodegen {
     }
 
     @Override
-    @SuppressWarnings("unchecked")
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
 
                 if (JVM_RETROFIT2.equals(getLibrary()) && StringUtils.isNotEmpty(operation.path) && operation.path.startsWith("/")) {
@@ -789,22 +790,22 @@ public class KotlinClientCodegen extends AbstractKotlinCodegen {
                         // match on first part in mediaTypes like 'application/json; charset=utf-8'
                         int endIndex = mediaTypeValue.indexOf(';');
                         String mediaType = (endIndex == -1
-                                ? mediaTypeValue
-                                : mediaTypeValue.substring(0, endIndex)
+                            ? mediaTypeValue
+                            : mediaTypeValue.substring(0, endIndex)
                         ).trim();
                         return "multipart/form-data".equals(mediaType)
-                                || "application/x-www-form-urlencoded".equals(mediaType)
-                                || (mediaType.startsWith("application/") && mediaType.endsWith("json"));
+                            || "application/x-www-form-urlencoded".equals(mediaType)
+                            || (mediaType.startsWith("application/") && mediaType.endsWith("json"));
                     };
                     operation.consumes = operation.consumes == null ? null : operation.consumes.stream()
-                            .filter(isSerializable)
-                            .limit(1)
-                            .collect(Collectors.toList());
+                        .filter(isSerializable)
+                        .limit(1)
+                        .collect(Collectors.toList());
                     operation.hasConsumes = operation.consumes != null && !operation.consumes.isEmpty();
 
                     operation.produces = operation.produces == null ? null : operation.produces.stream()
-                            .filter(isSerializable)
-                            .collect(Collectors.toList());
+                        .filter(isSerializable)
+                        .collect(Collectors.toList());
                     operation.hasProduces = operation.produces != null && !operation.produces.isEmpty();
                 }
 
@@ -850,7 +851,7 @@ public class KotlinClientCodegen extends AbstractKotlinCodegen {
                 }
             }
         }
-        return operations;
+        return objs;
     }
 
     private static boolean isMultipartType(List<Map<String, String>> consumes) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/KotlinSpringServerCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.languages.features.BeanValidationFeatures;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -578,10 +580,10 @@ public class KotlinSpringServerCodegen extends AbstractKotlinCodegen
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             ops.forEach(operation -> {
                 List<CodegenResponse> responses = operation.responses;
                 if (responses != null) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/LuaClientCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -420,11 +422,9 @@ public class LuaClientCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation op : operations) {
 
             String[] items = op.path.split("/", -1);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NimClientCodegen.java

@@ -25,6 +25,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.StringUtils;
 import org.slf4j.Logger;
@@ -258,11 +260,9 @@ public class NimClientCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation operation : operations) {
             operation.httpMethod = operation.httpMethod.toLowerCase(Locale.ROOT);
         }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/NodeJSExpressServerCodegen.java

@@ -31,7 +31,10 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.model.ApiInfoMap;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -238,11 +241,9 @@ public class NodeJSExpressServerCodegen extends DefaultCodegen implements Codege
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation operation : operations) {
             operation.httpMethod = operation.httpMethod.toLowerCase(Locale.ROOT);
 
@@ -272,13 +273,11 @@ public class NodeJSExpressServerCodegen extends DefaultCodegen implements Codege
         return objs;
     }
 
-    @SuppressWarnings("unchecked")
-    private static List<Map<String, Object>> getOperations(Map<String, Object> objs) {
-        List<Map<String, Object>> result = new ArrayList<>();
-        Map<String, Object> apiInfo = (Map<String, Object>) objs.get("apiInfo");
-        List<Map<String, Object>> apis = (List<Map<String, Object>>) apiInfo.get("apis");
-        for (Map<String, Object> api : apis) {
-            result.add((Map<String, Object>) api.get("operations"));
+    private static List<OperationMap> getOperations(Map<String, Object> objs) {
+        List<OperationMap> result = new ArrayList<>();
+        ApiInfoMap apiInfo = (ApiInfoMap) objs.get("apiInfo");
+        for (OperationsMap api : apiInfo.getApis()) {
+            result.add(api.getOperations());
         }
         return result;
     }
@@ -401,9 +400,8 @@ public class NodeJSExpressServerCodegen extends DefaultCodegen implements Codege
     public Map<String, Object> postProcessSupportingFileData(Map<String, Object> objs) {
         generateYAMLSpecFile(objs);
 
-        for (Map<String, Object> operations : getOperations(objs)) {
-            @SuppressWarnings("unchecked")
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+        for (OperationMap operations : getOperations(objs)) {
+            List<CodegenOperation> ops = operations.getOperation();
 
             List<Map<String, Object>> opsByPathList = sortOperationsByPath(ops);
             operations.put("operationsByPath", opsByPathList);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/OCamlClientCodegen.java

@@ -27,6 +27,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -713,11 +715,9 @@ public class OCamlClientCodegen extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
 
         for (CodegenOperation operation : operations) {
             // http method verb conversion, depending on client library (e.g. Hyper: PUT => Put, Reqwest: PUT => put)

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ObjcClientCodegen.java

@@ -23,6 +23,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -652,11 +654,11 @@ public class ObjcClientCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
 
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 if (!operation.allParams.isEmpty()) {
                     String firstParamName = operation.allParams.get(0).paramName;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpLaravelServerCodegen.java

@@ -22,6 +22,8 @@ import org.openapitools.codegen.CodegenType;
 import org.openapitools.codegen.SupportingFile;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.util.*;
@@ -234,11 +236,9 @@ public class PhpLaravelServerCodegen extends AbstractPhpCodegen {
 
     // override with any special post-processing
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
 
         for (CodegenOperation op : operations) {
             op.httpMethod = op.httpMethod.toLowerCase(Locale.ROOT);
@@ -261,12 +261,7 @@ public class PhpLaravelServerCodegen extends AbstractPhpCodegen {
 
         // sort the endpoints in ascending to avoid the route priority issue.
         // https://github.com/swagger-api/swagger-codegen/issues/2643
-        Collections.sort(operations, new Comparator<CodegenOperation>() {
-            @Override
-            public int compare(CodegenOperation lhs, CodegenOperation rhs) {
-                return lhs.path.compareTo(rhs.path);
-            }
-        });
+        operations.sort(Comparator.comparing(lhs -> lhs.path));
 
         return objs;
     }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpLumenServerCodegen.java

@@ -22,6 +22,8 @@ import org.openapitools.codegen.CodegenType;
 import org.openapitools.codegen.SupportingFile;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.util.*;
@@ -166,23 +168,16 @@ public class PhpLumenServerCodegen extends AbstractPhpCodegen {
 
     // override with any special post-processing
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
 
         for (CodegenOperation op : operations) {
             op.httpMethod = op.httpMethod.toLowerCase(Locale.ROOT);
         }
 
         // sort the endpoints in ascending to avoid the route priority issue.
-        Collections.sort(operations, new Comparator<CodegenOperation>() {
-            @Override
-            public int compare(CodegenOperation lhs, CodegenOperation rhs) {
-                return lhs.path.compareTo(rhs.path);
-            }
-        });
+        operations.sort(Comparator.comparing(lhs -> lhs.path));
 
         escapeMediaType(operations);
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpMezzioPathHandlerServerCodegen.java

@@ -31,6 +31,8 @@ import io.swagger.v3.oas.models.responses.ApiResponses;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -416,10 +418,10 @@ public class PhpMezzioPathHandlerServerCodegen extends AbstractPhpCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         String httpMethodDeclaration;
         String pathPattern = null;
         for (CodegenOperation op : operationList) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSilexServerCodegen.java

@@ -23,6 +23,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
@@ -260,9 +262,9 @@ public class PhpSilexServerCodegen extends DefaultCodegen implements CodegenConf
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             String path = op.path;
             String[] items = path.split("/", -1);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSlim4ServerCodegen.java

@@ -30,7 +30,10 @@ import org.openapitools.codegen.SupportingFile;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.model.ApiInfoMap;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -254,9 +257,9 @@ public class PhpSlim4ServerCodegen extends AbstractPhpCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         addUserClassnameToOperations(operations);
         escapeMediaType(operationList);
         return objs;
@@ -264,21 +267,16 @@ public class PhpSlim4ServerCodegen extends AbstractPhpCodegen {
 
     @Override
     public Map<String, Object> postProcessSupportingFileData(Map<String, Object> objs) {
-        Map<String, Object> apiInfo = (Map<String, Object>) objs.get("apiInfo");
-        List<HashMap<String, Object>> apiList = (List<HashMap<String, Object>>) apiInfo.get("apis");
-        for (HashMap<String, Object> api : apiList) {
-            HashMap<String, Object> operations = (HashMap<String, Object>) api.get("operations");
-            List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        ApiInfoMap apiInfo = (ApiInfoMap) objs.get("apiInfo");
+        for (OperationsMap api : apiInfo.getApis()) {
+            List<CodegenOperation> operationList = api.getOperations().getOperation();
 
             // Sort operations to avoid static routes shadowing
             // ref: https://github.com/nikic/FastRoute/blob/master/src/DataGenerator/RegexBasedAbstract.php#L92-L101
-            Collections.sort(operationList, new Comparator<CodegenOperation>() {
-                @Override
-                public int compare(CodegenOperation one, CodegenOperation another) {
+            operationList.sort((one, another) -> {
                     if (one.getHasPathParams() && !another.getHasPathParams()) return 1;
                     if (!one.getHasPathParams() && another.getHasPathParams()) return -1;
                     return 0;
-                }
             });
         }
 
@@ -310,8 +308,8 @@ public class PhpSlim4ServerCodegen extends AbstractPhpCodegen {
      *
      * @param operations codegen object with operations
      */
-    private void addUserClassnameToOperations(Map<String, Object> operations) {
-        String classname = (String) operations.get("classname");
+    private void addUserClassnameToOperations(OperationMap operations) {
+        String classname = operations.getClassname();
         classname = classname.replaceAll("^" + abstractNamePrefix, "");
         classname = classname.replaceAll(abstractNameSuffix + "$", "");
         operations.put(USER_CLASSNAME_KEY, classname);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSlimServerCodegen.java

@@ -26,7 +26,10 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.model.ApiInfoMap;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -157,9 +160,9 @@ public class PhpSlimServerCodegen extends AbstractPhpCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         addUserClassnameToOperations(operations);
         escapeMediaType(operationList);
         return objs;
@@ -167,21 +170,16 @@ public class PhpSlimServerCodegen extends AbstractPhpCodegen {
 
     @Override
     public Map<String, Object> postProcessSupportingFileData(Map<String, Object> objs) {
-        Map<String, Object> apiInfo = (Map<String, Object>) objs.get("apiInfo");
-        List<HashMap<String, Object>> apiList = (List<HashMap<String, Object>>) apiInfo.get("apis");
-        for (HashMap<String, Object> api : apiList) {
-            HashMap<String, Object> operations = (HashMap<String, Object>) api.get("operations");
-            List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        ApiInfoMap apiInfo = (ApiInfoMap) objs.get("apiInfo");
+        for (OperationsMap api : apiInfo.getApis()) {
+            List<CodegenOperation> operationList = api.getOperations().getOperation();
 
             // Sort operations to avoid static routes shadowing
             // ref: https://github.com/nikic/FastRoute/blob/master/src/DataGenerator/RegexBasedAbstract.php#L92-L101
-            Collections.sort(operationList, new Comparator<CodegenOperation>() {
-                @Override
-                public int compare(CodegenOperation one, CodegenOperation another) {
+            operationList.sort((one, another) -> {
                     if (one.getHasPathParams() && !another.getHasPathParams()) return 1;
                     if (!one.getHasPathParams() && another.getHasPathParams()) return -1;
                     return 0;
-                }
             });
         }
         return objs;
@@ -217,8 +215,8 @@ public class PhpSlimServerCodegen extends AbstractPhpCodegen {
      *
      * @param operations codegen object with operations
      */
-    private void addUserClassnameToOperations(Map<String, Object> operations) {
-        String classname = (String) operations.get("classname");
+    private void addUserClassnameToOperations(OperationMap operations) {
+        String classname = operations.getClassname();
         classname = classname.replaceAll("^" + abstractNamePrefix, "");
         classname = classname.replaceAll(abstractNameSuffix + "$", "");
         operations.put(USER_CLASSNAME_KEY, classname);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PhpSymfonyServerCodegen.java

@@ -24,6 +24,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -391,15 +393,15 @@ public class PhpSymfonyServerCodegen extends AbstractPhpCodegen implements Codeg
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
 
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        operations.put("controllerName", toControllerName((String) operations.get("pathPrefix")));
-        operations.put("symfonyService", toSymfonyService((String) operations.get("pathPrefix")));
+        OperationMap operations = objs.getOperations();
+        operations.put("controllerName", toControllerName(operations.getPathPrefix()));
+        operations.put("symfonyService", toSymfonyService(operations.getPathPrefix()));
 
         List<CodegenSecurity> authMethods = new ArrayList<>();
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        List<CodegenOperation> operationList = operations.getOperation();
 
         for (CodegenOperation op : operationList) {
             // Loop through all input parameters to determine, whether we have to import something to

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PowerShellClientCodegen.java

@@ -27,6 +27,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.ProcessUtils;
 import org.slf4j.Logger;
@@ -1012,8 +1014,8 @@ public class PowerShellClientCodegen extends DefaultCodegen implements CodegenCo
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
         HashMap<String, CodegenModel> modelMaps = new HashMap<>();
         HashMap<String, Integer> processedModelMaps = new HashMap<>();
 
@@ -1022,7 +1024,7 @@ public class PowerShellClientCodegen extends DefaultCodegen implements CodegenCo
             modelMaps.put(m.classname, m);
         }
 
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             int index = 0;
             for (CodegenParameter p : op.allParams) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ProtobufSchemaCodegen.java

@@ -28,6 +28,8 @@ import org.openapitools.codegen.meta.features.SecurityFeature;
 import org.openapitools.codegen.meta.features.WireFormatFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 
 import org.apache.commons.lang3.StringUtils;
@@ -541,9 +543,9 @@ public class ProtobufSchemaCodegen extends DefaultCodegen implements CodegenConf
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             int index = 1;
             for (CodegenParameter p : op.allParams) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java

@@ -31,6 +31,8 @@ import org.openapitools.codegen.CodegenDiscriminator.MappedModel;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.ProcessUtils;
 import org.openapitools.codegen.meta.GeneratorMetadata;
@@ -365,13 +367,13 @@ public class PythonClientCodegen extends PythonLegacyClientCodegen {
 
     @Override
     @SuppressWarnings("static-method")
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         // fix the imports that each model has, add the module reference to the model
         // loops through imports and converts them all
         // from 'Pet' to 'from petstore_api.model.pet import Pet'
 
-        HashMap<String, Object> val = (HashMap<String, Object>) objs.get("operations");
-        ArrayList<CodegenOperation> operations = (ArrayList<CodegenOperation>) val.get("operation");
+        OperationMap val = objs.getOperations();
+        List<CodegenOperation> operations = val.getOperation();
         for (CodegenOperation operation : operations) {
             if (operation.imports.isEmpty()) {
                 continue;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonExperimentalClientCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.api.TemplatePathLocator;
 import org.openapitools.codegen.ignore.CodegenIgnoreProcessor;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.*;
 import io.swagger.v3.core.util.Json;
 import io.swagger.v3.oas.models.media.*;
@@ -424,12 +426,12 @@ public class PythonExperimentalClientCodegen extends AbstractPythonCodegen {
     It is very verbose to write all of this info into the api template
     This ingests all operations under a tag in the objs input and writes out one file for each endpoint
      */
-    protected void generateEndpoints(Map<String, Object> objs) {
+    protected void generateEndpoints(OperationsMap objs) {
         if (!(Boolean) additionalProperties.get(CodegenConstants.GENERATE_APIS)) {
             return;
         }
-        HashMap<String, Object> operations = (HashMap<String, Object>) objs.get("operations");
-        ArrayList<CodegenOperation> codegenOperations = (ArrayList<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> codegenOperations = operations.getOperation();
         for (CodegenOperation co: codegenOperations) {
             for (Tag tag: co.tags) {
                 String tagName = tag.getName();
@@ -442,7 +444,7 @@ public class PythonExperimentalClientCodegen extends AbstractPythonCodegen {
                 String templateName = "endpoint.handlebars";
                 String filename = endpointFilename(templateName, pythonTagName, co.operationId);
                 try {
-                    File written = processTemplateToFile(operationMap, templateName, filename, true, CodegenConstants.APIS);
+                    processTemplateToFile(operationMap, templateName, filename, true, CodegenConstants.APIS);
                 } catch (IOException e) {
                     LOGGER.error("Error when writing template file {}", e.toString());
                 }
@@ -671,14 +673,14 @@ public class PythonExperimentalClientCodegen extends AbstractPythonCodegen {
 
     @Override
     @SuppressWarnings("static-method")
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         // fix the imports that each model has, add the module reference to the model
         // loops through imports and converts them all
         // from 'Pet' to 'from petstore_api.model.pet import Pet'
 
-        HashMap<String, Object> val = (HashMap<String, Object>) objs.get("operations");
-        ArrayList<CodegenOperation> operations = (ArrayList<CodegenOperation>) val.get("operation");
-        ArrayList<HashMap<String, String>> imports = (ArrayList<HashMap<String, String>>) objs.get("imports");
+        OperationMap val = objs.getOperations();
+        List<CodegenOperation> operations = val.getOperation();
+        List<Map<String, String>> imports = objs.getImports();
         for (CodegenOperation operation : operations) {
             if (operation.imports.size() == 0) {
                 continue;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java

@@ -30,6 +30,8 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -188,12 +190,12 @@ public class PythonFastAPIServerCodegen extends AbstractPythonCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
         // Set will make sure that no duplicated items are used.
         Set<String> securityImports = new HashSet<>();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (final CodegenOperation operation : ops) {
                 List<CodegenResponse> responses = operation.responses;
                 if (responses != null) {
@@ -230,7 +232,7 @@ public class PythonFastAPIServerCodegen extends AbstractPythonCodegen {
             }
         }
 
-        objs.put("securityImports", new ArrayList<String>(securityImports));
+        objs.put("securityImports", new ArrayList<>(securityImports));
 
         return objs;
     }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RClientCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -689,16 +691,16 @@ public class RClientCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
 
-        HashMap<String, CodegenModel> modelMaps = new HashMap<String, CodegenModel>();
+        HashMap<String, CodegenModel> modelMaps = new HashMap<>();
         for (ModelMap modelMap : allModels) {
             CodegenModel m = modelMap.getModel();
             modelMaps.put(m.classname, m);
         }
 
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+        List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation operation : operations) {
             for (CodegenParameter cp : operation.allParams) {
                 cp.vendorExtensions.put("x-r-example", constructExampleCode(cp, modelMaps));

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RubyClientCodegen.java

@@ -23,6 +23,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -573,18 +575,18 @@ public class RubyClientCodegen extends AbstractRubyCodegen {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        HashMap<String, CodegenModel> modelMaps = new HashMap<String, CodegenModel>();
-        HashMap<String, Integer> processedModelMaps = new HashMap<String, Integer>();
+        OperationMap operations = objs.getOperations();
+        HashMap<String, CodegenModel> modelMaps = new HashMap<>();
+        HashMap<String, Integer> processedModelMaps = new HashMap<>();
 
         for (ModelMap modelMap : allModels) {
             CodegenModel m = modelMap.getModel();
             modelMaps.put(m.classname, m);
         }
 
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             for (CodegenParameter p : op.allParams) {
                 p.vendorExtensions.put("x-ruby-example", constructExampleCode(p, modelMaps, processedModelMaps));

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustClientCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.StringUtils;
 import org.slf4j.Logger;
@@ -525,11 +527,9 @@ public class RustClientCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        @SuppressWarnings("unchecked")
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
-        @SuppressWarnings("unchecked")
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
+        List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation operation : operations) {
             // http method verb conversion, depending on client library (e.g. Hyper: PUT => Put, Reqwest: PUT => put)
             if (HYPER_LIBRARY.equals(getLibrary())) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustServerCodegen.java

@@ -33,8 +33,11 @@ import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.model.ApiInfoMap;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.URLPathUtils;
 import org.slf4j.Logger;
@@ -968,9 +971,9 @@ public class RustServerCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
 
         for (CodegenOperation op : operationList) {
             postProcessOperationWithModels(op, allModels);
@@ -1370,12 +1373,9 @@ public class RustServerCodegen extends DefaultCodegen implements CodegenConfig {
      * @return true if any operation has a callback, false otherwise
      */
     private static boolean haveCallbacks(Map<String, Object> bundle) {
-        Map<String, Object> apiInfo = (Map<String, Object>) bundle.get("apiInfo");
-        List<Object> apis = (List<Object>) apiInfo.get("apis");
-        for (Object api : apis) {
-            Map<String, Object> apiData = (Map<String, Object>) api;
-            Map<String, Object> opss = (Map<String, Object>) apiData.get("operations");
-            List<CodegenOperation> ops = (List<CodegenOperation>) opss.get("operation");
+        ApiInfoMap apiInfo = (ApiInfoMap) bundle.get("apiInfo");
+        for (OperationsMap api : apiInfo.getApis()) {
+            List<CodegenOperation> ops = api.getOperations().getOperation();
             for (CodegenOperation op : ops) {
                 if (!op.callbacks.isEmpty()) {
                     return true;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaAkkaClientCodegen.java

@@ -26,6 +26,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -212,13 +214,12 @@ public class ScalaAkkaClientCodegen extends AbstractScalaCodegen implements Code
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         if (registerNonStandardStatusCodes) {
             try {
-                @SuppressWarnings("unchecked")
-                Map<String, ArrayList<CodegenOperation>> opsMap = (Map<String, ArrayList<CodegenOperation>>) objs.get("operations");
-                HashSet<Integer> unknownCodes = new HashSet<Integer>();
-                for (CodegenOperation operation : opsMap.get("operation")) {
+                OperationMap opsMap = objs.getOperations();
+                HashSet<Integer> unknownCodes = new HashSet<>();
+                for (CodegenOperation operation : opsMap.getOperation()) {
                     for (CodegenResponse response : operation.responses) {
                         if ("default".equals(response.code)) {
                             continue;
@@ -251,13 +252,7 @@ public class ScalaAkkaClientCodegen extends AbstractScalaCodegen implements Code
         }
 
         // Remove OAuth securities
-        Iterator<CodegenSecurity> it = codegenSecurities.iterator();
-        while (it.hasNext()) {
-            final CodegenSecurity security = it.next();
-            if (security.isOAuth) {
-                it.remove();
-            }
-        }
+        codegenSecurities.removeIf(security -> security.isOAuth);
         if (codegenSecurities.isEmpty()) {
             return null;
         }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaAkkaHttpServerCodegen.java

@@ -26,6 +26,8 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -282,8 +284,8 @@ public class ScalaAkkaHttpServerCodegen extends AbstractScalaCodegen implements
 
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> baseObjs = super.postProcessOperationsWithModels(objs, allModels);
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationsMap baseObjs = super.postProcessOperationsWithModels(objs, allModels);
         pathMatcherPatternsPostProcessor(baseObjs);
         marshallingPostProcessor(baseObjs);
         return baseObjs;
@@ -344,13 +346,12 @@ public class ScalaAkkaHttpServerCodegen extends AbstractScalaCodegen implements
 
     public static String PATH_MATCHER_PATTERNS_KEY = "pathMatcherPatterns";
 
-    @SuppressWarnings("unchecked")
-    private static void pathMatcherPatternsPostProcessor(Map<String, Object> objs) {
+    private static void pathMatcherPatternsPostProcessor(OperationsMap objs) {
         if (objs != null) {
             HashMap<String, PathMatcherPattern> patternMap = new HashMap<>();
-            Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+            OperationMap operations = objs.getOperations();
             if (operations != null) {
-                List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+                List<CodegenOperation> ops = operations.getOperation();
                 for (CodegenOperation operation : ops) {
                     for (CodegenParameter parameter : operation.pathParams) {
                         if (parameter.pattern != null && !parameter.pattern.isEmpty()) {
@@ -371,8 +372,7 @@ public class ScalaAkkaHttpServerCodegen extends AbstractScalaCodegen implements
     }
 
     // Responsible for setting up Marshallers/Unmarshallers
-    @SuppressWarnings("unchecked")
-    public static void marshallingPostProcessor(Map<String, Object> objs) {
+    public static void marshallingPostProcessor(OperationsMap objs) {
 
         if (objs == null) {
             return;
@@ -384,9 +384,9 @@ public class ScalaAkkaHttpServerCodegen extends AbstractScalaCodegen implements
         boolean hasCookieParams = false;
         boolean hasMultipart = false;
 
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> operationList = operations.getOperation();
 
             for (CodegenOperation op : operationList) {
                 boolean isMultipart = op.isMultipart;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaFinchServerCodegen.java

@@ -22,6 +22,8 @@ import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -229,11 +231,10 @@ public class ScalaFinchServerCodegen extends DefaultCodegen implements CodegenCo
         return outputFolder + File.separator + sourceFolder + File.separator + modelPackage().replace('.', File.separatorChar);
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
 
             // Converts GET /foo/bar => get("foo" :: "bar")

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaLagomServerCodegen.java

@@ -22,6 +22,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -202,9 +204,9 @@ public class ScalaLagomServerCodegen extends AbstractScalaCodegen implements Cod
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        ArrayList<CodegenOperation> oplist = (ArrayList<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> oplist = operations.getOperation();
 
         for (CodegenOperation codegenOperation : oplist) {
             String path = codegenOperation.path;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaPlayFrameworkServerCodegen.java

@@ -23,8 +23,11 @@ import io.swagger.v3.oas.models.media.ArraySchema;
 import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
+import org.openapitools.codegen.model.ApiInfoMap;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.IndentedLambda;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -223,9 +226,8 @@ public class ScalaPlayFrameworkServerCodegen extends AbstractScalaCodegen implem
                 .put("indented_4", new IndentedLambda(4, " "));
     }
 
-    @SuppressWarnings("unchecked")
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         Map<String, CodegenModel> models = new HashMap<>();
 
         for (ModelMap _mo : allModels) {
@@ -233,9 +235,9 @@ public class ScalaPlayFrameworkServerCodegen extends AbstractScalaCodegen implem
             models.put(model.classname, _mo.getModel());
         }
 
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+        OperationMap operations = objs.getOperations();
         if (operations != null) {
-            List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            List<CodegenOperation> ops = operations.getOperation();
             for (CodegenOperation operation : ops) {
                 Pattern pathVariableMatcher = Pattern.compile("\\{([^}]+)}");
                 Matcher match = pathVariableMatcher.matcher(operation.path);
@@ -277,18 +279,15 @@ public class ScalaPlayFrameworkServerCodegen extends AbstractScalaCodegen implem
         return objs;
     }
 
-    @SuppressWarnings("unchecked")
     @Override
     public Map<String, Object> postProcessSupportingFileData(Map<String, Object> objs) {
         objs = super.postProcessSupportingFileData(objs);
         generateJSONSpecFile(objs);
 
         // Prettify routes file
-        Map<String, Object> apiInfo = (Map<String, Object>) objs.get("apiInfo");
-        List<Map<String, Object>> apis = (List<Map<String, Object>>) apiInfo.get("apis");
-        List<CodegenOperation> ops = apis.stream()
-                .map(api -> (Map<String, Object>) api.get("operations"))
-                .flatMap(operations -> ((List<CodegenOperation>) operations.get("operation")).stream())
+        ApiInfoMap apiInfo = (ApiInfoMap) objs.get("apiInfo");
+        List<CodegenOperation> ops = apiInfo.getApis().stream()
+                .flatMap(api -> api.getOperations().getOperation().stream())
                 .collect(Collectors.toList());
         int maxPathLength = ops.stream()
                 .mapToInt(op -> op.httpMethod.length() + op.path.length())

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalaSttpClientCodegen.java

@@ -30,6 +30,8 @@ import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -313,13 +315,12 @@ public class ScalaSttpClientCodegen extends AbstractScalaCodegen implements Code
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         if (registerNonStandardStatusCodes) {
             try {
-                @SuppressWarnings("unchecked")
-                Map<String, ArrayList<CodegenOperation>> opsMap = (Map<String, ArrayList<CodegenOperation>>) objs.get("operations");
-                HashSet<Integer> unknownCodes = new HashSet<Integer>();
-                for (CodegenOperation operation : opsMap.get("operation")) {
+                OperationMap opsMap = objs.getOperations();
+                HashSet<Integer> unknownCodes = new HashSet<>();
+                for (CodegenOperation operation : opsMap.getOperation()) {
                     for (CodegenResponse response : operation.responses) {
                         if ("default".equals(response.code)) {
                             continue;
@@ -352,13 +353,7 @@ public class ScalaSttpClientCodegen extends AbstractScalaCodegen implements Code
         }
 
         // Remove OAuth securities
-        Iterator<CodegenSecurity> it = codegenSecurities.iterator();
-        while (it.hasNext()) {
-            final CodegenSecurity security = it.next();
-            if (security.isOAuth) {
-                it.remove();
-            }
-        }
+        codegenSecurities.removeIf(security -> security.isOAuth);
         if (codegenSecurities.isEmpty()) {
             return null;
         }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/ScalatraServerCodegen.java

@@ -20,6 +20,8 @@ package org.openapitools.codegen.languages;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.util.*;
@@ -167,9 +169,9 @@ public class ScalatraServerCodegen extends AbstractScalaCodegen implements Codeg
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             // force http method to lower case
             op.httpMethod = op.httpMethod.toLowerCase(Locale.ROOT);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/SpringCodegen.java

@@ -62,6 +62,8 @@ import org.openapitools.codegen.meta.features.SecurityFeature;
 import org.openapitools.codegen.meta.features.WireFormatFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.SplitStringLambda;
 import org.openapitools.codegen.templating.mustache.TrimWhitespaceLambda;
 import org.openapitools.codegen.utils.URLPathUtils;
@@ -622,10 +624,10 @@ public class SpringCodegen extends AbstractJavaCodegen
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        final Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        final OperationMap operations = objs.getOperations();
         if (operations != null) {
-            final List<CodegenOperation> ops = (List<CodegenOperation>) operations.get("operation");
+            final List<CodegenOperation> ops = operations.getOperation();
             for (final CodegenOperation operation : ops) {
                 final List<CodegenResponse> responses = operation.responses;
                 if (responses != null) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtml2Generator.java

@@ -29,6 +29,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.Markdown;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
@@ -142,9 +144,9 @@ public class StaticHtml2Generator extends DefaultCodegen implements CodegenConfi
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             op.httpMethod = op.httpMethod.toLowerCase(Locale.ROOT);
             for (CodegenResponse response : op.responses) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/StaticHtmlGenerator.java

@@ -26,6 +26,8 @@ import io.swagger.v3.oas.models.media.Schema;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.*;
 import org.openapitools.codegen.model.ModelMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.Markdown;
 import org.openapitools.codegen.utils.ModelUtils;
 
@@ -125,9 +127,9 @@ public class StaticHtmlGenerator extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             op.httpMethod = op.httpMethod.toLowerCase(Locale.ROOT);
             for (CodegenResponse response : op.responses) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/Swift5ClientCodegen.java

@@ -28,6 +28,8 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -1182,16 +1184,16 @@ public class Swift5ClientCodegen extends DefaultCodegen implements CodegenConfig
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
-        Map<String, Object> objectMap = (Map<String, Object>) objs.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        OperationMap objectMap = objs.getOperations();
 
-        HashMap<String, CodegenModel> modelMaps = new HashMap<String, CodegenModel>();
+        HashMap<String, CodegenModel> modelMaps = new HashMap<>();
         for (ModelMap modelMap: allModels) {
             CodegenModel m = modelMap.getModel();
             modelMaps.put(m.classname, m);
         }
 
-        List<CodegenOperation> operations = (List<CodegenOperation>) objectMap.get("operation");
+        List<CodegenOperation> operations = objectMap.getOperation();
         for (CodegenOperation operation : operations) {
             for (CodegenParameter cp : operation.allParams) {
                 cp.vendorExtensions.put("x-swift-example", constructExampleCode(cp, modelMaps, new HashSet<>()));

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAngularClientCodegen.java

@@ -22,6 +22,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.SemVer;
 import org.slf4j.Logger;
@@ -385,13 +387,13 @@ public class TypeScriptAngularClientCodegen extends AbstractTypeScriptClientCode
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
 
         // Add filename information for api imports
-        objs.put("apiFilename", getApiFilenameFromClassname(objs.get("classname").toString()));
+        objs.put("apiFilename", getApiFilenameFromClassname(objs.getClassname()));
 
-        List<CodegenOperation> ops = (List<CodegenOperation>) objs.get("operation");
+        List<CodegenOperation> ops = objs.getOperation();
         boolean hasSomeFormParams = false;
         for (CodegenOperation op : ops) {
             if (op.getHasFormParams()) {
@@ -446,8 +448,8 @@ public class TypeScriptAngularClientCodegen extends AbstractTypeScriptClientCode
         operations.put("hasSomeFormParams", hasSomeFormParams);
 
         // Add additional filename information for model imports in the services
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        for (Map<String, Object> im : imports) {
+        List<Map<String, String>> imports = operations.getImports();
+        for (Map<String, String> im : imports) {
             // This property is not used in the templates any more, subject for removal
             im.put("filename", im.get("import"));
             im.put("classname", im.get("classname"));

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAureliaClientCodegen.java

@@ -20,6 +20,8 @@ package org.openapitools.codegen.languages;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.util.*;
 
@@ -84,12 +86,12 @@ public class TypeScriptAureliaClientCodegen extends AbstractTypeScriptClientCode
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
 
         HashSet<String> modelImports = new HashSet<>();
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
+        OperationMap operations = objs.getOperations();
+        List<CodegenOperation> operationList = operations.getOperation();
         for (CodegenOperation op : operationList) {
             // Aurelia uses "asGet", "asPost", ... methods; change the method format
             op.httpMethod = camelize(op.httpMethod.toLowerCase(Locale.ROOT));

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptAxiosClientCodegen.java

@@ -24,6 +24,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 
 import java.util.*;
@@ -145,10 +147,10 @@ public class TypeScriptAxiosClientCodegen extends AbstractTypeScriptClientCodege
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
         objs = super.postProcessOperationsWithModels(objs, allModels);
-        Map<String, Object> vals = (Map<String, Object>) objs.getOrDefault("operations", new HashMap<>());
-        List<CodegenOperation> operations = (List<CodegenOperation>) vals.getOrDefault("operation", new ArrayList<>());
+        OperationMap vals = objs.getOperations();
+        List<CodegenOperation> operations = vals.getOperation();
         /*
             Filter all the operations that are multipart/form-data operations and set the vendor extension flag
             'multipartFormData' for the template to work with.
@@ -156,9 +158,7 @@ public class TypeScriptAxiosClientCodegen extends AbstractTypeScriptClientCodege
         operations.stream()
                 .filter(op -> op.hasConsumes)
                 .filter(op -> op.consumes.stream().anyMatch(opc -> opc.values().stream().anyMatch("multipart/form-data"::equals)))
-                .forEach(op -> {
-                    op.vendorExtensions.putIfAbsent("multipartFormData", true);
-                });
+                .forEach(op -> op.vendorExtensions.putIfAbsent("multipartFormData", true));
         return objs;
     }
 
@@ -191,7 +191,6 @@ public class TypeScriptAxiosClientCodegen extends AbstractTypeScriptClientCodege
     }
 
     @Override
-    @SuppressWarnings("unchecked")
     public ModelsMap postProcessModels(ModelsMap objs) {
         List<ModelMap> models = postProcessModelsEnum(objs).getModels();
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptClientCodegen.java

@@ -35,6 +35,8 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -318,18 +320,17 @@ public class TypeScriptClientCodegen extends DefaultCodegen implements CodegenCo
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> models) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> models) {
 
         // Add additional filename information for model imports in the apis
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        for (Map<String, Object> im : imports) {
-            im.put("filename", ((String) im.get("import")).replace(".", "/"));
-            im.put("classname", getModelnameFromModelFilename(im.get("import").toString()));
+        List<Map<String, String>> imports = operations.getImports();
+        for (Map<String, String> im : imports) {
+            im.put("filename", im.get("import").replace(".", "/"));
+            im.put("classname", getModelnameFromModelFilename(im.get("import")));
         }
 
-        @SuppressWarnings("unchecked")
-        Map<String, Object> operationsMap = (Map<String, Object>) operations.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operationsMap.get("operation");
+        OperationMap operationsMap = operations.getOperations();
+        List<CodegenOperation> operationList = operationsMap.getOperation();
         for (CodegenOperation operation: operationList) {
             List<CodegenResponse> responses = operation.responses;
             operation.returnType = this.getReturnType(responses);

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptFetchClientCodegen.java

@@ -30,6 +30,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.templating.mustache.IndentedLambda;
 import org.openapitools.codegen.utils.ModelUtils;
 
@@ -572,9 +574,9 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
         // Add supporting file only if we plan to generate files in /apis
-        if (operations.size() > 0 && !addedApiIndex) {
+        if (!operations.isEmpty() && !addedApiIndex) {
             addedApiIndex = true;
             supportingFiles.add(new SupportingFile("apis.index.mustache", apiPackage().replace('.', File.separatorChar), "index.ts"));
             if (this.getSagasAndRecords()) {
@@ -584,7 +586,7 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         }
 
         // Add supporting file only if we plan to generate files in /models
-        if (allModels.size() > 0 && !addedModelIndex) {
+        if (!allModels.isEmpty() && !addedModelIndex) {
             addedModelIndex = true;
             supportingFiles.add(new SupportingFile("models.index.mustache", modelPackage().replace('.', File.separatorChar), "index.ts"));
         }
@@ -763,10 +765,9 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         return var.items.isNullable || (var.items.items != null && var.items.items.isNullable);
     }
 
-    private void escapeOperationIds(Map<String, Object> operations) {
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<ExtendedCodegenOperation> operationList = (List<ExtendedCodegenOperation>) _operations.get("operation");
-        for (ExtendedCodegenOperation op : operationList) {
+    private void escapeOperationIds(OperationsMap operations) {
+        for (CodegenOperation _op : operations.getOperations().getOperation()) {
+            ExtendedCodegenOperation op = (ExtendedCodegenOperation) _op;
             String param = op.operationIdCamelCase + "Request";
             if (op.imports.contains(param)) {
                 // we import a model with the same name as the generated operation, escape it
@@ -777,26 +778,25 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         }
     }
 
-    private void addOperationModelImportInformation(Map<String, Object> operations) {
+    private void addOperationModelImportInformation(OperationsMap operations) {
         // This method will add extra information to the operations.imports array.
         // The api template uses this information to import all the required
         // models for a given operation.
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        List<String> existingRecordClassNames = new ArrayList<String>();
-        List<String> existingClassNames = new ArrayList<String>();
-        for (Map<String, Object> im : imports) {
-            String className = im.get("import").toString().replace(modelPackage() + ".", "");
+        List<Map<String, String>> imports = operations.getImports();
+        List<String> existingRecordClassNames = new ArrayList<>();
+        List<String> existingClassNames = new ArrayList<>();
+        for (Map<String, String> im : imports) {
+            String className = im.get("import").replace(modelPackage() + ".", "");
             existingClassNames.add(className);
             existingRecordClassNames.add(className + "Record");
             im.put("className", className);
         }
 
         if (this.getSagasAndRecords()) {
-            Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-            List<ExtendedCodegenOperation> operationList = (List<ExtendedCodegenOperation>) _operations.get("operation");
-            Set<String> additionalPassthroughImports = new TreeSet<String>();
-            for (ExtendedCodegenOperation op : operationList) {
-                if (op.returnPassthrough != null && op.returnBaseTypeAlternate instanceof String) {
+            Set<String> additionalPassthroughImports = new TreeSet<>();
+            for (CodegenOperation _op : operations.getOperations().getOperation()) {
+                ExtendedCodegenOperation op = (ExtendedCodegenOperation) _op;
+                if (op.returnPassthrough != null && op.returnBaseTypeAlternate != null) {
                     if (op.returnTypeSupportsEntities && !existingRecordClassNames.contains(op.returnBaseTypeAlternate)) {
                         additionalPassthroughImports.add(op.returnBaseTypeAlternate);
                     } else if (!op.returnTypeSupportsEntities && !existingClassNames.contains(op.returnBaseTypeAlternate)) {
@@ -809,14 +809,13 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         }
     }
 
-    private void updateOperationParameterForEnum(Map<String, Object> operations) {
+    private void updateOperationParameterForEnum(OperationsMap operations) {
         // This method will add extra information as to whether or not we have enums and
         // update their names with the operation.id prefixed.
         // It will also set the uniqueId status if provided.
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<ExtendedCodegenOperation> operationList = (List<ExtendedCodegenOperation>) _operations.get("operation");
         boolean hasEnum = false;
-        for (ExtendedCodegenOperation op : operationList) {
+        for (CodegenOperation _op : operations.getOperations().getOperation()) {
+            ExtendedCodegenOperation op = (ExtendedCodegenOperation) _op;
             for (CodegenParameter cpParam : op.allParams) {
                 ExtendedCodegenParameter param = (ExtendedCodegenParameter) cpParam;
 
@@ -831,13 +830,12 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         operations.put("hasEnums", hasEnum);
     }
 
-    private void updateOperationParameterForSagaAndRecords(Map<String, Object> operations) {
+    private void updateOperationParameterForSagaAndRecords(OperationsMap operations) {
         // This method will add extra information as to whether or not we have enums and
         // update their names with the operation.id prefixed.
         // It will also set the uniqueId status if provided.
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<ExtendedCodegenOperation> operationList = (List<ExtendedCodegenOperation>) _operations.get("operation");
-        for (ExtendedCodegenOperation op : operationList) {
+        for (CodegenOperation _op : operations.getOperations().getOperation()) {
+            ExtendedCodegenOperation op = (ExtendedCodegenOperation) _op;
             for (CodegenParameter cpParam : op.allParams) {
                 ExtendedCodegenParameter param = (ExtendedCodegenParameter) cpParam;
 
@@ -881,13 +879,12 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
         }
     }
 
-    private void addOperationObjectResponseInformation(Map<String, Object> operations) {
+    private void addOperationObjectResponseInformation(OperationsMap operations) {
         // This method will modify the information on the operations' return type.
         // The api template uses this information to know when to return a text
         // response for a given simple response operation.
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<ExtendedCodegenOperation> operationList = (List<ExtendedCodegenOperation>) _operations.get("operation");
-        for (ExtendedCodegenOperation op : operationList) {
+        for (CodegenOperation _op : operations.getOperations().getOperation()) {
+            ExtendedCodegenOperation op = (ExtendedCodegenOperation) _op;
             if ("object".equals(op.returnType)) {
                 op.isMap = true;
                 op.returnSimpleType = false;
@@ -896,7 +893,6 @@ public class TypeScriptFetchClientCodegen extends AbstractTypeScriptClientCodege
     }
 
     private void addOperationPrefixParameterInterfacesInformation(Map<String, Object> operations) {
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
         operations.put("prefixParameterInterfaces", getPrefixParameterInterfaces());
     }
 

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptInversifyClientCodegen.java

@@ -25,6 +25,8 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.util.*;
@@ -197,13 +199,13 @@ public class TypeScriptInversifyClientCodegen extends AbstractTypeScriptClientCo
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
 
         // Add filename information for api imports
-        objs.put("apiFilename", getApiFilenameFromClassname(objs.get("classname").toString()));
+        objs.put("apiFilename", getApiFilenameFromClassname(objs.getClassname()));
 
-        List<CodegenOperation> ops = (List<CodegenOperation>) objs.get("operation");
+        List<CodegenOperation> ops = objs.getOperation();
         for (CodegenOperation op : ops) {
             // Prep a string buffer where we're going to set up our new version of the string.
             StringBuilder pathBuffer = new StringBuilder();
@@ -246,10 +248,10 @@ public class TypeScriptInversifyClientCodegen extends AbstractTypeScriptClientCo
         }
 
         // Add additional filename information for model imports in the services
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        for (Map<String, Object> im : imports) {
+        List<Map<String, String>> imports = operations.getImports();
+        for (Map<String, String> im : imports) {
             im.put("filename", im.get("import"));
-            im.put("classname", getModelnameFromModelFilename(im.get("filename").toString()));
+            im.put("classname", getModelnameFromModelFilename(im.get("filename")));
         }
 
         return operations;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptNestjsClientCodegen.java

@@ -22,6 +22,8 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.openapitools.codegen.utils.SemVer;
 import org.slf4j.Logger;
@@ -267,13 +269,13 @@ public class TypeScriptNestjsClientCodegen extends AbstractTypeScriptClientCodeg
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
 
         // Add filename information for api imports
-        objs.put("apiFilename", getApiFilenameFromClassname(objs.get("classname").toString()));
+        objs.put("apiFilename", getApiFilenameFromClassname(objs.getClassname()));
 
-        List<CodegenOperation> ops = (List<CodegenOperation>) objs.get("operation");
+        List<CodegenOperation> ops = objs.getOperation();
         boolean hasSomeFormParams = false;
         for (CodegenOperation op : ops) {
             if (op.getHasFormParams()) {
@@ -327,8 +329,8 @@ public class TypeScriptNestjsClientCodegen extends AbstractTypeScriptClientCodeg
         operations.put("hasSomeFormParams", hasSomeFormParams);
 
         // Add additional filename information for model imports in the services
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        for (Map<String, Object> im : imports) {
+        List<Map<String, String>> imports = operations.getImports();
+        for (Map<String, String> im : imports) {
             im.put("filename", im.get("import"));
             im.put("classname", im.get("classname"));
         }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptNodeClientCodegen.java

@@ -25,6 +25,8 @@ import io.swagger.v3.oas.models.responses.ApiResponse;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -198,13 +200,13 @@ public class TypeScriptNodeClientCodegen extends AbstractTypeScriptClientCodegen
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
-        Map<String, Object> objs = (Map<String, Object>) operations.get("operations");
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
+        OperationMap objs = operations.getOperations();
 
         // The api.mustache template requires all of the auth methods for the whole api
         // Loop over all the operations and pick out each unique auth method
         Map<String, CodegenSecurity> authMethodsMap = new HashMap<>();
-        for (CodegenOperation op : (List<CodegenOperation>) objs.get("operation")) {
+        for (CodegenOperation op : objs.getOperation()) {
             if (op.hasAuthMethods) {
                 for (CodegenSecurity sec : op.authMethods) {
                     authMethodsMap.put(sec.name, sec);
@@ -219,12 +221,12 @@ public class TypeScriptNodeClientCodegen extends AbstractTypeScriptClientCodegen
         }
 
         // Add filename information for api imports
-        objs.put("apiFilename", getApiFilenameFromClassname(objs.get("classname").toString()));
+        objs.put("apiFilename", getApiFilenameFromClassname(objs.getClassname()));
 
         // Add additional filename information for model imports in the apis
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        for (Map<String, Object> im : imports) {
-            im.put("filename", im.get("import").toString());
+        List<Map<String, String>> imports = operations.getImports();
+        for (Map<String, String> im : imports) {
+            im.put("filename", im.get("import"));
         }
 
         return operations;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptReduxQueryClientCodegen.java

@@ -22,6 +22,7 @@ import io.swagger.v3.parser.util.SchemaTypeUtil;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 
 import java.io.File;
@@ -185,15 +186,15 @@ public class TypeScriptReduxQueryClientCodegen extends AbstractTypeScriptClientC
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
         // Add supporting file only if we plan to generate files in /apis
-        if (operations.size() > 0 && !addedApiIndex) {
+        if (!operations.isEmpty() && !addedApiIndex) {
             addedApiIndex = true;
             supportingFiles.add(new SupportingFile("apis.index.mustache", apiPackage().replace('.', File.separatorChar), "index.ts"));
         }
 
         // Add supporting file only if we plan to generate files in /models
-        if (allModels.size() > 0 && !addedModelIndex) {
+        if (!allModels.isEmpty() && !addedModelIndex) {
             addedModelIndex = true;
             supportingFiles.add(new SupportingFile("models.index.mustache", modelPackage().replace('.', File.separatorChar), "index.ts"));
         }
@@ -204,13 +205,13 @@ public class TypeScriptReduxQueryClientCodegen extends AbstractTypeScriptClientC
         return operations;
     }
 
-    private void addOperationModelImportInformation(Map<String, Object> operations) {
+    private void addOperationModelImportInformation(OperationsMap operations) {
         // This method will add extra information to the operations.imports array.
         // The api template uses this information to import all the required
         // models for a given operation.
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        for (Map<String, Object> im : imports) {
-            String[] parts = im.get("import").toString().replace(modelPackage() + ".", "").split("( [|&] )|[<>]");
+        List<Map<String, String>> imports = operations.getImports();
+        for (Map<String, String> im : imports) {
+            String[] parts = im.get("import").replace(modelPackage() + ".", "").split("( [|&] )|[<>]");
             for (String s : parts) {
                 if (needToImport(s)) {
                     im.put("filename", im.get("import"));
@@ -220,13 +221,11 @@ public class TypeScriptReduxQueryClientCodegen extends AbstractTypeScriptClientC
         }
     }
 
-    private void updateOperationParameterEnumInformation(Map<String, Object> operations) {
+    private void updateOperationParameterEnumInformation(OperationsMap operations) {
         // This method will add extra information as to whether or not we have enums and
         // update their names with the operation.id prefixed.
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) _operations.get("operation");
         boolean hasEnum = false;
-        for (CodegenOperation op : operationList) {
+        for (CodegenOperation op : operations.getOperations().getOperation()) {
             for (CodegenParameter param : op.allParams) {
                 if (Boolean.TRUE.equals(param.isEnum)) {
                     hasEnum = true;
@@ -239,13 +238,11 @@ public class TypeScriptReduxQueryClientCodegen extends AbstractTypeScriptClientC
         operations.put("hasEnums", hasEnum);
     }
 
-    private void addOperationObjectResponseInformation(Map<String, Object> operations) {
+    private void addOperationObjectResponseInformation(OperationsMap operations) {
         // This method will modify the information on the operations' return type.
         // The api template uses this information to know when to return a text
         // response for a given simple response operation.
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) _operations.get("operation");
-        for (CodegenOperation op : operationList) {
+        for (CodegenOperation op : operations.getOperations().getOperation()) {
             if("object".equals(op.returnType)) {
                 op.isMap = true;
                 op.returnSimpleType = false;

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/TypeScriptRxjsClientCodegen.java

@@ -23,6 +23,7 @@ import org.openapitools.codegen.*;
 import org.openapitools.codegen.meta.features.DocumentationFeature;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationsMap;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -196,15 +197,14 @@ public class TypeScriptRxjsClientCodegen extends AbstractTypeScriptClientCodegen
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> operations, List<ModelMap> allModels) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap operations, List<ModelMap> allModels) {
         // Convert List of CodegenOperation to List of ExtendedCodegenOperation
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<CodegenOperation> os = (List<CodegenOperation>) _operations.get("operation");
-        List<ExtendedCodegenOperation> newOs = new ArrayList<ExtendedCodegenOperation>();
+        List<CodegenOperation> os = operations.getOperations().getOperation();
+        List<ExtendedCodegenOperation> newOs = new ArrayList<>();
         for (CodegenOperation o : os) {
             newOs.add(new ExtendedCodegenOperation(o));
         }
-        _operations.put("operation", newOs);
+        operations.getOperations().setOperation(newOs);
 
         this.addOperationModelImportInformation(operations);
         this.updateOperationParameterEnumInformation(operations);
@@ -213,23 +213,22 @@ public class TypeScriptRxjsClientCodegen extends AbstractTypeScriptClientCodegen
         return operations;
     }
 
-    private void addOperationModelImportInformation(Map<String, Object> operations) {
+    private void addOperationModelImportInformation(OperationsMap operations) {
         // This method will add extra information to the operations.imports array.
         // The api template uses this information to import all the required
         // models for a given operation.
-        List<Map<String, Object>> imports = (List<Map<String, Object>>) operations.get("imports");
-        for (Map<String, Object> im : imports) {
-            im.put("className", im.get("import").toString().replace("models.", ""));
+        List<Map<String, String>> imports = operations.getImports();
+        for (Map<String, String> im : imports) {
+            im.put("className", im.get("import").replace("models.", ""));
         }
     }
 
-    private void updateOperationParameterEnumInformation(Map<String, Object> operations) {
+    private void updateOperationParameterEnumInformation(OperationsMap operations) {
         // This method will add extra information as to whether or not we have enums and
         // update their names with the operation.id prefixed.
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<ExtendedCodegenOperation> operationList = (List<ExtendedCodegenOperation>) _operations.get("operation");
         boolean hasEnums = false;
-        for (ExtendedCodegenOperation op : operationList) {
+        for (CodegenOperation _op : operations.getOperations().getOperation()) {
+            ExtendedCodegenOperation op = (ExtendedCodegenOperation) _op;
             for (CodegenParameter param : op.allParams) {
                 if (Boolean.TRUE.equals(param.isEnum)) {
                     hasEnums = true;
@@ -249,10 +248,8 @@ public class TypeScriptRxjsClientCodegen extends AbstractTypeScriptClientCodegen
         }
     }
 
-    private void addConditionalImportInformation(Map<String, Object> operations) {
+    private void addConditionalImportInformation(OperationsMap operations) {
         // This method will determine if there are required parameters and if there are list containers
-        Map<String, Object> _operations = (Map<String, Object>) operations.get("operations");
-        List<ExtendedCodegenOperation> operationList = (List<ExtendedCodegenOperation>) _operations.get("operation");
 
         boolean hasRequiredParams = false;
         boolean hasListContainers = false;
@@ -260,7 +257,8 @@ public class TypeScriptRxjsClientCodegen extends AbstractTypeScriptClientCodegen
         boolean hasQueryParams = false;
         boolean hasPathParams = false;
 
-        for (ExtendedCodegenOperation op : operationList) {
+        for (CodegenOperation _op : operations.getOperations().getOperation()) {
+            ExtendedCodegenOperation op = (ExtendedCodegenOperation) _op;
             if (op.getHasRequiredParams()) {
                 hasRequiredParams = true;
             }

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/WsdlSchemaCodegen.java

@@ -23,6 +23,7 @@ import org.openapitools.codegen.meta.GeneratorMetadata;
 import org.openapitools.codegen.meta.Stability;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.model.OperationsMap;
 
 import java.io.File;
 import java.text.Normalizer;
@@ -94,12 +95,8 @@ public class WsdlSchemaCodegen extends DefaultCodegen implements CodegenConfig {
     }
 
     @Override
-    public Map<String, Object> postProcessOperationsWithModels(Map<String, Object> objs,
-                                                               List<ModelMap> allModels) {
-
-        Map<String, Object> operations = (Map<String, Object>) objs.get("operations");
-        List<CodegenOperation> operationList = (List<CodegenOperation>) operations.get("operation");
-        for (CodegenOperation op : operationList) {
+    public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        for (CodegenOperation op : objs.getOperations().getOperation()) {
             op.operationId = this.generateOperationId(op);
 
             // for xml compliant primitives, lowercase dataType of openapi

modules/openapi-generator/src/main/java/org/openapitools/codegen/model/ApiInfoMap.java

@@ -0,0 +1,17 @@
+package org.openapitools.codegen.model;
+
+import java.util.HashMap;
+import java.util.List;
+
+public class ApiInfoMap extends HashMap<String, Object> {
+
+    public void setApis(List<OperationsMap> apis) {
+        put("apis", apis);
+    }
+
+    @SuppressWarnings("unchecked")
+    public List<OperationsMap> getApis() {
+        return (List<OperationsMap>) get("apis");
+    }
+
+}

modules/openapi-generator/src/main/java/org/openapitools/codegen/model/OperationMap.java

@@ -0,0 +1,40 @@
+package org.openapitools.codegen.model;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+
+import org.openapitools.codegen.CodegenOperation;
+
+public class OperationMap extends HashMap<String, Object> {
+
+    public void setOperation(CodegenOperation ops) {
+        put("operation", Collections.singletonList(ops));
+    }
+
+    public void setOperation(List<? extends CodegenOperation> ops) {
+        put("operation", ops);
+    }
+
+    @SuppressWarnings("unchecked")
+    public List<CodegenOperation> getOperation() {
+        return (List<CodegenOperation>) get("operation");
+    }
+
+    public void setClassname(String classname) {
+        put("classname", classname);
+    }
+
+    public String getClassname() {
+        return (String) get("classname");
+    }
+
+    public void setPathPrefix(String pathPrefix) {
+        put("pathPrefix", pathPrefix);
+    }
+
+    public String getPathPrefix() {
+        return (String) get("pathPrefix");
+    }
+
+}

modules/openapi-generator/src/main/java/org/openapitools/codegen/model/OperationsMap.java

@@ -0,0 +1,30 @@
+package org.openapitools.codegen.model;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.openapitools.codegen.CodegenOperation;
+
+public class OperationsMap extends HashMap<String, Object> {
+
+    public void setOperation(OperationMap objs) {
+        put("operations", objs);
+    }
+
+    public OperationMap getOperations() {
+        return (OperationMap) get("operations");
+    }
+
+    public void setImports(List<Map<String, String>> imports) {
+        put("imports", imports);
+    }
+
+    @SuppressWarnings("unchecked")
+    public List<Map<String, String>> getImports() {
+        return (List<Map<String, String>>) get("imports");
+    }
+
+}