Getter and Setter for hideGenerationTimestamp (#7998)

* Create unit test to control regressions

* Change HIDE_GENERATION_TIMESTAMP handling

* Add new test case: set values with the setters

* Add 'isHideGenerationTimestamp()' getter

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java

@@ -128,6 +128,12 @@ public class DefaultCodegen {
             this.setApiPackage((String) additionalProperties.get(CodegenConstants.API_PACKAGE));
         }
 
+        if (additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
+            setHideGenerationTimestamp(convertPropertyToBooleanAndWriteBack(CodegenConstants.HIDE_GENERATION_TIMESTAMP));
+        } else {
+            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, hideGenerationTimestamp);
+        }
+
         if (additionalProperties.containsKey(CodegenConstants.SORT_PARAMS_BY_REQUIRED_FLAG)) {
             this.setSortParamsByRequiredFlag(Boolean.valueOf(additionalProperties
                     .get(CodegenConstants.SORT_PARAMS_BY_REQUIRED_FLAG).toString()));
@@ -3372,6 +3378,14 @@ public class DefaultCodegen {
     public void setRemoveOperationIdPrefix(boolean removeOperationIdPrefix) {
         this.removeOperationIdPrefix = removeOperationIdPrefix;
     }
+    
+    public boolean isHideGenerationTimestamp() {
+        return hideGenerationTimestamp;
+    }
+
+    public void setHideGenerationTimestamp(boolean hideGenerationTimestamp) {
+        this.hideGenerationTimestamp = hideGenerationTimestamp;
+    }
 
     /**
      * All library templates supported.

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractEiffelCodegen.java

@@ -39,6 +39,9 @@ public abstract class AbstractEiffelCodegen extends DefaultCodegen implements Co
         
     public AbstractEiffelCodegen(){
         super();
+
+        hideGenerationTimestamp = Boolean.FALSE;
+
         setReservedWordsLowerCase(Arrays.asList(
                 // language reserved words
                 "across", "agent", "alias", "all", "and", "as", "assign", "attribute", "check", "class", "convert",
@@ -89,7 +92,7 @@ public abstract class AbstractEiffelCodegen extends DefaultCodegen implements Co
         cliOptions
                 .add(new CliOption(CodegenConstants.PACKAGE_VERSION, "Eiffel package version.").defaultValue("1.0.0"));
         cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                "hides the timestamp when files were generated").defaultValue(Boolean.TRUE.toString()));
+                CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC).defaultValue(Boolean.TRUE.toString()));
     }
     
     @Override

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractGoCodegen.java

@@ -28,6 +28,8 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
     public AbstractGoCodegen() {
         super();
 
+        hideGenerationTimestamp = Boolean.FALSE;
+
         defaultIncludes = new HashSet<String>(
             Arrays.asList(
                 "map",
@@ -84,7 +86,7 @@ public abstract class AbstractGoCodegen extends DefaultCodegen implements Codege
         cliOptions.clear();
         cliOptions.add(new CliOption(CodegenConstants.PACKAGE_NAME, "Go package name (convention: lowercase).")
                 .defaultValue("swagger"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
     }
 

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/AbstractJavaCodegen.java

@@ -83,7 +83,6 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
     protected String javaUtilPrefix = "";
     protected Boolean serializableModel = false;
     protected boolean serializeBigDecimalAsString = false;
-    protected boolean hideGenerationTimestamp = false;
     protected String apiDocPath = "docs/";
     protected String modelDocPath = "docs/";
     protected boolean supportJava6= false;
@@ -97,6 +96,8 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
         modelDocTemplateFiles.put("model_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 
+        hideGenerationTimestamp = false; 
+        
         setReservedWordsLowerCase(
             Arrays.asList(
                 // used as internal variables, can collide with parameter names

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/CSharpClientCodegen.java

@@ -44,7 +44,6 @@ public class CSharpClientCodegen extends AbstractCSharpCodegen {
     protected boolean supportsUWP = Boolean.FALSE;
     protected boolean netStandard = Boolean.FALSE;
     protected boolean generatePropertyChanged = Boolean.FALSE;
-    protected boolean hideGenerationTimestamp = Boolean.TRUE;
 
     protected boolean validatable = Boolean.TRUE;
     protected Map<Character, String> regexModifiers;
@@ -62,6 +61,8 @@ public class CSharpClientCodegen extends AbstractCSharpCodegen {
         modelDocTemplateFiles.put("model_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 
+        hideGenerationTimestamp = Boolean.TRUE;
+
         cliOptions.clear();
 
         // CLI options
@@ -188,12 +189,6 @@ public class CSharpClientCodegen extends AbstractCSharpCodegen {
             setModelPropertyNaming((String) additionalProperties.get(CodegenConstants.MODEL_PROPERTY_NAMING));
         }
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            setHideGenerationTimestamp(convertPropertyToBooleanAndWriteBack(CodegenConstants.HIDE_GENERATION_TIMESTAMP));
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, hideGenerationTimestamp);
-        }
 
         if (isEmpty(apiPackage)) {
             setApiPackage("Api");
@@ -768,10 +763,6 @@ public class CSharpClientCodegen extends AbstractCSharpCodegen {
         this.generatePropertyChanged = generatePropertyChanged;
     }
 
-    public void setHideGenerationTimestamp(boolean hideGenerationTimestamp) {
-        this.hideGenerationTimestamp = hideGenerationTimestamp;
-    }
-
     public boolean isNonPublicApi() {
         return nonPublicApi;
     }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/DartClientCodegen.java

@@ -8,7 +8,6 @@ import io.swagger.codegen.CodegenProperty;
 import io.swagger.codegen.CodegenType;
 import io.swagger.codegen.DefaultCodegen;
 import io.swagger.codegen.SupportingFile;
-import io.swagger.models.Model;
 import io.swagger.models.properties.ArrayProperty;
 import io.swagger.models.properties.MapProperty;
 import io.swagger.models.properties.Property;
@@ -52,6 +51,9 @@ public class DartClientCodegen extends DefaultCodegen implements CodegenConfig {
         modelDocTemplateFiles.put("object_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         setReservedWordsLowerCase(
                 Arrays.asList(
                         "abstract", "as", "assert", "async", "async*", "await",
@@ -165,14 +167,6 @@ public class DartClientCodegen extends DefaultCodegen implements CodegenConfig {
             this.setSourceFolder((String) additionalProperties.get(CodegenConstants.SOURCE_FOLDER));
         }
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-            Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         // make api and model doc path available in mustache template
         additionalProperties.put("apiDocPath", apiDocPath);
         additionalProperties.put("modelDocPath", modelDocPath);

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/EiffelClientCodegen.java

@@ -52,20 +52,15 @@ public class EiffelClientCodegen extends AbstractEiffelCodegen {
         apiTestTemplateFiles.put("test/api_test.mustache", ".e");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
         embeddedTemplateDir = templateDir = "Eiffel";
+
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = true;
     }
 
     @Override
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
             setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
         } else {

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/GoClientCodegen.java

@@ -33,6 +33,9 @@ public class GoClientCodegen extends AbstractGoCodegen {
 
         embeddedTemplateDir = templateDir = "go";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         setReservedWordsLowerCase(
             Arrays.asList(
                 // data type
@@ -58,14 +61,6 @@ public class GoClientCodegen extends AbstractGoCodegen {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
             setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/HaskellHttpClientCodegen.java

@@ -142,6 +142,9 @@ public class HaskellHttpClientCodegen extends DefaultCodegen implements CodegenC
         apiPackage = "API";
         //modelPackage = "Model";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         // Haskell keywords and reserved function names, taken mostly from https://wiki.haskell.org/Keywords
         setReservedWordsLowerCase(
                 Arrays.asList(
@@ -246,7 +249,7 @@ public class HaskellHttpClientCodegen extends DefaultCodegen implements CodegenC
         cliOptions.add(CliOption.newString(PROP_DATETIME_FORMAT, "format string used to parse/render a datetime"));
         cliOptions.add(CliOption.newString(PROP_DATE_FORMAT, "format string used to parse/render a date").defaultValue(defaultDateFormat));
 
-        cliOptions.add(CliOption.newBoolean(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated").defaultValue(Boolean.TRUE.toString()));
+        cliOptions.add(CliOption.newBoolean(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC).defaultValue(Boolean.TRUE.toString()));
 
     }
 
@@ -340,12 +343,6 @@ public class HaskellHttpClientCodegen extends DefaultCodegen implements CodegenC
     @Override
     public void processOpts() {
         super.processOpts();
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            convertPropertyToBooleanAndWriteBack(CodegenConstants.HIDE_GENERATION_TIMESTAMP);
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, true);
-        }
 
         if (additionalProperties.containsKey(PROP_ALLOW_FROMJSON_NULLS)) {
             setAllowFromJsonNulls(convertPropertyToBoolean(PROP_ALLOW_FROMJSON_NULLS));

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/JavascriptClientCodegen.java

@@ -111,6 +111,9 @@ public class JavascriptClientCodegen extends DefaultCodegen implements CodegenCo
         modelDocTemplateFiles.put("model_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         // reference: http://www.w3schools.com/js/js_reserved.asp
         setReservedWordsLowerCase(
                 Arrays.asList(
@@ -192,7 +195,7 @@ public class JavascriptClientCodegen extends DefaultCodegen implements CodegenCo
         cliOptions.add(new CliOption(USE_INHERITANCE,
                 "use JavaScript prototype chains & delegation for inheritance")
                 .defaultValue(Boolean.TRUE.toString()));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
         cliOptions.add(new CliOption(USE_ES6,
                 "use JavaScript ES6 (ECMAScript 6) (beta). Default is ES5.")
@@ -223,14 +226,6 @@ public class JavascriptClientCodegen extends DefaultCodegen implements CodegenCo
         }
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(PROJECT_NAME)) {
             setProjectName(((String) additionalProperties.get(PROJECT_NAME)));
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/JavascriptClosureAngularClientCodegen.java

@@ -21,6 +21,9 @@ public class JavascriptClosureAngularClientCodegen extends DefaultCodegen implem
         super();
         outputFolder = "generated-code/javascript-closure-angular";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         supportsInheritance = false;
         setReservedWordsLowerCase(Arrays.asList("abstract",
             "continue", "for", "new", "switch", "assert", "default", "if",
@@ -71,7 +74,7 @@ public class JavascriptClosureAngularClientCodegen extends DefaultCodegen implem
 
         typeMapping.put("binary", "string");
 
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
         cliOptions.add(new CliOption(USE_ES6,
                 "use ES6 templates")
@@ -82,11 +85,6 @@ public class JavascriptClosureAngularClientCodegen extends DefaultCodegen implem
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        }
-
         if (additionalProperties.containsKey(USE_ES6)) {
             setUseEs6(convertPropertyToBooleanAndWriteBack(USE_ES6));
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/LuaClientCodegen.java

@@ -47,6 +47,9 @@ public class LuaClientCodegen extends DefaultCodegen implements CodegenConfig {
 
         embeddedTemplateDir = templateDir = "lua";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         setReservedWordsLowerCase(
             Arrays.asList(
                 // data type
@@ -109,7 +112,7 @@ public class LuaClientCodegen extends DefaultCodegen implements CodegenConfig {
                 .defaultValue("swagger-client"));
         cliOptions.add(new CliOption(CodegenConstants.PACKAGE_VERSION, "Lua package version.")
                 .defaultValue("1.0.0-1"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
 
     }
@@ -118,14 +121,6 @@ public class LuaClientCodegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
             setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/ObjcClientCodegen.java

@@ -56,6 +56,9 @@ public class ObjcClientCodegen extends DefaultCodegen implements CodegenConfig {
         modelDocTemplateFiles.put("model_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         defaultIncludes.clear();
         defaultIncludes.add("bool");
         defaultIncludes.add("BOOL");
@@ -167,7 +170,7 @@ public class ObjcClientCodegen extends DefaultCodegen implements CodegenConfig {
         cliOptions.add(new CliOption(AUTHOR_EMAIL, "Email to use in the podspec file.").defaultValue("apiteam@swagger.io"));
         cliOptions.add(new CliOption(GIT_REPO_URL, "URL for the git repo where this podspec should point to.")
                 .defaultValue("https://github.com/swagger-api/swagger-codegen"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
     }
 
@@ -190,14 +193,6 @@ public class ObjcClientCodegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(POD_NAME)) {
             setPodName((String) additionalProperties.get(POD_NAME));
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PerlClientCodegen.java

@@ -57,6 +57,8 @@ public class PerlClientCodegen extends DefaultCodegen implements CodegenConfig {
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
         embeddedTemplateDir = templateDir = "perl";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
 
         setReservedWordsLowerCase(
                 Arrays.asList(
@@ -135,14 +137,6 @@ public class PerlClientCodegen extends DefaultCodegen implements CodegenConfig {
         additionalProperties.put("apiDocPath", apiDocPath);
         additionalProperties.put("modelDocPath", modelDocPath);
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-            Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         supportingFiles.add(new SupportingFile("ApiClient.mustache", ("lib/" + modulePathPart).replace('/', File.separatorChar), "ApiClient.pm"));
         supportingFiles.add(new SupportingFile("Configuration.mustache", ("lib/" + modulePathPart).replace('/', File.separatorChar), "Configuration.pm"));
         supportingFiles.add(new SupportingFile("ApiFactory.mustache", ("lib/" + modulePathPart).replace('/', File.separatorChar), "ApiFactory.pm"));

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PhpClientCodegen.java

@@ -69,6 +69,9 @@ public class PhpClientCodegen extends DefaultCodegen implements CodegenConfig {
         modelDocTemplateFiles.put("model_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         setReservedWordsLowerCase(
                 Arrays.asList(
                     // local variables used in api methods (endpoints)
@@ -141,7 +144,7 @@ public class PhpClientCodegen extends DefaultCodegen implements CodegenConfig {
         cliOptions.add(new CliOption(COMPOSER_PROJECT_NAME, "The project name used in the composer package name. The template uses {{composerVendorName}}/{{composerProjectName}} for the composer package name. e.g. petstore-client. IMPORTANT NOTE (2016/03): composerProjectName will be deprecated and replaced by gitRepoId in the next swagger-codegen release"));
         cliOptions.add(new CliOption(CodegenConstants.GIT_REPO_ID, CodegenConstants.GIT_REPO_ID_DESC));
         cliOptions.add(new CliOption(CodegenConstants.ARTIFACT_VERSION, "The version to use in the composer package version field. e.g. 1.2.3"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.ALLOW_UNICODE_IDENTIFIERS_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
     }
 
@@ -210,14 +213,6 @@ public class PhpClientCodegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(PACKAGE_PATH)) {
             this.setPackagePath((String) additionalProperties.get(PACKAGE_PATH));
         } else {

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/PythonClientCodegen.java

@@ -63,6 +63,9 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
 
         testFolder = "test";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         languageSpecificPrimitives.clear();
         languageSpecificPrimitives.add("int");
         languageSpecificPrimitives.add("float");
@@ -127,7 +130,7 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
         cliOptions.add(new CliOption(PACKAGE_URL, "python package URL."));
         cliOptions.add(CliOption.newBoolean(CodegenConstants.SORT_PARAMS_BY_REQUIRED_FLAG,
                 CodegenConstants.SORT_PARAMS_BY_REQUIRED_FLAG_DESC).defaultValue(Boolean.TRUE.toString()));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
 
         supportedLibraries.put("urllib3", "urllib3-based client");
@@ -171,14 +174,6 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
             setPackageVersion("1.0.0");
         }
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         additionalProperties.put(CodegenConstants.PROJECT_NAME, projectName);
         additionalProperties.put(CodegenConstants.PACKAGE_NAME, packageName);
         additionalProperties.put(CodegenConstants.PACKAGE_VERSION, packageVersion);

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/RClientCodegen.java

@@ -45,6 +45,9 @@ public class RClientCodegen extends DefaultCodegen implements CodegenConfig {
 
         embeddedTemplateDir = templateDir = "r";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         setReservedWordsLowerCase(
             Arrays.asList(
                 // reserved words: https://stat.ethz.ch/R-manual/R-devel/library/base/html/Reserved.html
@@ -93,7 +96,7 @@ public class RClientCodegen extends DefaultCodegen implements CodegenConfig {
                 .defaultValue("swagger"));
         cliOptions.add(new CliOption(CodegenConstants.PACKAGE_VERSION, "R package version.")
                 .defaultValue("1.0.0"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
 
     }
@@ -102,14 +105,6 @@ public class RClientCodegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
             setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
         } else {

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/RubyClientCodegen.java

@@ -73,6 +73,9 @@ public class RubyClientCodegen extends DefaultCodegen implements CodegenConfig {
         modelTestTemplateFiles.put("model_test.mustache", ".rb");
         apiTestTemplateFiles.put("api_test.mustache", ".rb");
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         setReservedWordsLowerCase(
                 Arrays.asList(
                     // local variable names used in API methods (endpoints)
@@ -161,7 +164,7 @@ public class RubyClientCodegen extends DefaultCodegen implements CodegenConfig {
 
         cliOptions.add(new CliOption(GEM_AUTHOR_EMAIL, "gem author email (only one is supported)."));
 
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated").
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC).
                 defaultValue(Boolean.TRUE.toString()));
 
     }
@@ -170,14 +173,6 @@ public class RubyClientCodegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(GEM_NAME)) {
             setGemName((String) additionalProperties.get(GEM_NAME));
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/RustClientCodegen.java

@@ -47,6 +47,9 @@ public class RustClientCodegen extends DefaultCodegen implements CodegenConfig {
         modelDocTemplateFiles.put("model_doc.mustache", ".md");
         apiDocTemplateFiles.put("api_doc.mustache", ".md");
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         embeddedTemplateDir = templateDir = "rust";
 
         setReservedWordsLowerCase(
@@ -109,7 +112,7 @@ public class RustClientCodegen extends DefaultCodegen implements CodegenConfig {
                 .defaultValue("swagger"));
         cliOptions.add(new CliOption(CodegenConstants.PACKAGE_VERSION, "Rust package version.")
                 .defaultValue("1.0.0"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
 
     }
@@ -118,14 +121,6 @@ public class RustClientCodegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(CodegenConstants.PACKAGE_NAME)) {
             setPackageName((String) additionalProperties.get(CodegenConstants.PACKAGE_NAME));
         }

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Swift3Codegen.java

@@ -86,6 +86,9 @@ public class Swift3Codegen extends DefaultCodegen implements CodegenConfig {
         apiPackage = File.separator + "APIs";
         modelPackage = File.separator + "Models";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         languageSpecificPrimitives = new HashSet<>(
                 Arrays.asList(
                         "Int",
@@ -173,7 +176,7 @@ public class Swift3Codegen extends DefaultCodegen implements CodegenConfig {
         cliOptions.add(new CliOption(POD_SCREENSHOTS, "Screenshots used for Podspec"));
         cliOptions.add(new CliOption(POD_DOCUMENTATION_URL, "Documentation URL used for Podspec"));
         cliOptions.add(new CliOption(SWIFT_USE_API_NAMESPACE, "Flag to make all the API classes inner-class of {{projectName}}API"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
         cliOptions.add(new CliOption(LENIENT_TYPE_CAST, "Accept and cast values for simple types (string->bool, string->int, int->string)")
                 .defaultValue(Boolean.FALSE.toString()));
@@ -183,14 +186,6 @@ public class Swift3Codegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         // Setup project name
         if (additionalProperties.containsKey(PROJECT_NAME)) {
             setProjectName((String) additionalProperties.get(PROJECT_NAME));

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/Swift4Codegen.java

@@ -241,7 +241,7 @@ public class Swift4Codegen extends DefaultCodegen implements CodegenConfig {
                                      "Flag to make all the API classes inner-class "
                                      + "of {{projectName}}API"));
         cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                                     "hides the timestamp when files were generated")
+                                     CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
         cliOptions.add(new CliOption(LENIENT_TYPE_CAST,
                                      "Accept and cast values for simple types (string->bool, "
@@ -253,17 +253,6 @@ public class Swift4Codegen extends DefaultCodegen implements CodegenConfig {
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                                     Boolean.TRUE.toString());
-        } else {
-            Boolean hide = Boolean.valueOf(additionalProperties()
-                                           .get(CodegenConstants.HIDE_GENERATION_TIMESTAMP)
-                                           .toString());
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, hide);
-        }
-
         // Setup project name
         if (additionalProperties.containsKey(PROJECT_NAME)) {
             setProjectName((String) additionalProperties.get(PROJECT_NAME));

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/SwiftCodegen.java

@@ -78,6 +78,9 @@ public class SwiftCodegen extends DefaultCodegen implements CodegenConfig {
         apiPackage = File.separator + "APIs";
         modelPackage = File.separator + "Models";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         languageSpecificPrimitives = new HashSet<String>(
                 Arrays.asList(
                     "Int",
@@ -163,7 +166,7 @@ public class SwiftCodegen extends DefaultCodegen implements CodegenConfig {
         cliOptions.add(new CliOption(POD_SCREENSHOTS, "Screenshots used for Podspec"));
         cliOptions.add(new CliOption(POD_DOCUMENTATION_URL, "Documentation URL used for Podspec"));
         cliOptions.add(new CliOption(SWIFT_USE_API_NAMESPACE, "Flag to make all the API classes inner-class of {{projectName}}API"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
 
     }
@@ -171,13 +174,6 @@ public class SwiftCodegen extends DefaultCodegen implements CodegenConfig {
     @Override
     public void processOpts() {
         super.processOpts();
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
 
         // Setup project name
         if (additionalProperties.containsKey(PROJECT_NAME)) {

modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/SymfonyServerCodegen.java

@@ -81,6 +81,9 @@ public class SymfonyServerCodegen extends AbstractPhpCodegen implements CodegenC
         apiTestTemplateFiles.put("testing/api_test.mustache", ".php");
         embeddedTemplateDir = templateDir = "php-symfony";
 
+        // default HIDE_GENERATION_TIMESTAMP to true
+        hideGenerationTimestamp = Boolean.TRUE;
+
         setReservedWordsLowerCase(
             Arrays.asList(
                 // local variables used in api methods (endpoints)
@@ -148,7 +151,7 @@ public class SymfonyServerCodegen extends AbstractPhpCodegen implements CodegenC
         cliOptions.add(new CliOption(COMPOSER_VENDOR_NAME, "The vendor name used in the composer package name. The template uses {{composerVendorName}}/{{composerProjectName}} for the composer package name. e.g. yaypets. IMPORTANT NOTE (2016/03): composerVendorName will be deprecated and replaced by gitUserId in the next swagger-codegen release"));
         cliOptions.add(new CliOption(BUNDLE_NAME, "The name of the Symfony bundle. The template uses {{bundleName}}"));
         cliOptions.add(new CliOption(COMPOSER_PROJECT_NAME, "The project name used in the composer package name. The template uses {{composerVendorName}}/{{composerProjectName}} for the composer package name. e.g. petstore-client. IMPORTANT NOTE (2016/03): composerProjectName will be deprecated and replaced by gitRepoId in the next swagger-codegen release"));
-        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "hides the timestamp when files were generated")
+        cliOptions.add(new CliOption(CodegenConstants.HIDE_GENERATION_TIMESTAMP, CodegenConstants.HIDE_GENERATION_TIMESTAMP_DESC)
                 .defaultValue(Boolean.TRUE.toString()));
         cliOptions.add(new CliOption(PHP_LEGACY_SUPPORT, "Should the generated code be compatible with PHP 5.x?").defaultValue(Boolean.TRUE.toString()));
     }
@@ -209,14 +212,6 @@ public class SymfonyServerCodegen extends AbstractPhpCodegen implements CodegenC
     public void processOpts() {
         super.processOpts();
 
-        // default HIDE_GENERATION_TIMESTAMP to true
-        if (!additionalProperties.containsKey(CodegenConstants.HIDE_GENERATION_TIMESTAMP)) {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, Boolean.TRUE.toString());
-        } else {
-            additionalProperties.put(CodegenConstants.HIDE_GENERATION_TIMESTAMP,
-                    Boolean.valueOf(additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP).toString()));
-        }
-
         if (additionalProperties.containsKey(BUNDLE_NAME)) {
             this.setBundleName((String) additionalProperties.get(BUNDLE_NAME));
         } else {

modules/swagger-codegen/src/test/java/io/swagger/codegen/DefaultCodegenTest.java

@@ -0,0 +1,36 @@
+package io.swagger.codegen;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+public class DefaultCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final DefaultCodegen codegen = new DefaultCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final DefaultCodegen codegen = new DefaultCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false );
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final DefaultCodegen codegen = new DefaultCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/csharp/CSharpClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.csharp;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.CSharpClientCodegen;
+
+public class CSharpClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final CSharpClientCodegen codegen = new CSharpClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final CSharpClientCodegen codegen = new CSharpClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final CSharpClientCodegen codegen = new CSharpClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/dart/DartClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.dart;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.DartClientCodegen;
+
+public class DartClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final DartClientCodegen codegen = new DartClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final DartClientCodegen codegen = new DartClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final DartClientCodegen codegen = new DartClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/eiffel/AbstractEiffelCodegenTest.java

@@ -0,0 +1,57 @@
+package io.swagger.codegen.eiffel;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.CodegenType;
+import io.swagger.codegen.languages.AbstractEiffelCodegen;
+
+public class AbstractEiffelCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final AbstractEiffelCodegen codegen = new P_AbstractEiffelCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final AbstractEiffelCodegen codegen = new P_AbstractEiffelCodegen();
+        codegen.setHideGenerationTimestamp(true);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final AbstractEiffelCodegen codegen = new P_AbstractEiffelCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, true);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    private static class P_AbstractEiffelCodegen extends AbstractEiffelCodegen {
+        @Override
+        public CodegenType getTag() {
+            return null;
+        }
+
+        @Override
+        public String getName() {
+            return null;
+        }
+
+        @Override
+        public String getHelp() {
+            return null;
+        }
+    }
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/eiffel/EiffelClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.eiffel;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.EiffelClientCodegen;
+
+public class EiffelClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final EiffelClientCodegen codegen = new EiffelClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final EiffelClientCodegen codegen = new EiffelClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final EiffelClientCodegen codegen = new EiffelClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/go/AbstractGoCodegenTest.java

@@ -0,0 +1,57 @@
+package io.swagger.codegen.go;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.CodegenType;
+import io.swagger.codegen.languages.AbstractGoCodegen;
+
+public class AbstractGoCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final AbstractGoCodegen codegen = new P_AbstractGoCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final AbstractGoCodegen codegen = new P_AbstractGoCodegen();
+        codegen.setHideGenerationTimestamp(true);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final AbstractGoCodegen codegen = new P_AbstractGoCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, true);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    private static class P_AbstractGoCodegen extends AbstractGoCodegen {
+        @Override
+        public CodegenType getTag() {
+            return null;
+        }
+
+        @Override
+        public String getName() {
+            return null;
+        }
+
+        @Override
+        public String getHelp() {
+            return null;
+        }
+    }
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/go/GoClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.go;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.GoClientCodegen;
+
+public class GoClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final GoClientCodegen codegen = new GoClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final GoClientCodegen codegen = new GoClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final GoClientCodegen codegen = new GoClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/haskellhttpclient/HaskellHttpClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.haskellhttpclient;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.HaskellHttpClientCodegen;
+
+public class HaskellHttpClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final HaskellHttpClientCodegen codegen = new HaskellHttpClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final HaskellHttpClientCodegen codegen = new HaskellHttpClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final HaskellHttpClientCodegen codegen = new HaskellHttpClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/java/AbstractJavaCodegenTest.java

@@ -3,29 +3,18 @@ package io.swagger.codegen.java;
 import org.testng.Assert;
 import org.testng.annotations.Test;
 
+import io.swagger.codegen.CodegenConstants;
 import io.swagger.codegen.CodegenType;
 import io.swagger.codegen.languages.AbstractJavaCodegen;
-import io.swagger.models.*;
+import io.swagger.models.Operation;
-import io.swagger.models.parameters.*;
+import io.swagger.models.Path;
+import io.swagger.models.Swagger;
+import io.swagger.models.parameters.BodyParameter;
+import io.swagger.models.parameters.FormParameter;
 
 public class AbstractJavaCodegenTest {
 
-    private final AbstractJavaCodegen fakeJavaCodegen = new AbstractJavaCodegen() {
+    private final AbstractJavaCodegen fakeJavaCodegen = new P_AbstractJavaCodegen();
-        @Override
-        public CodegenType getTag() {
-            return null;
-        }
-
-        @Override
-        public String getName() {
-            return null;
-        }
-
-        @Override
-        public String getHelp() {
-            return null;
-        }
-    };
 
     @Test
     public void toEnumVarNameShouldNotShortenUnderScore() throws Exception {
@@ -97,4 +86,49 @@ public class AbstractJavaCodegenTest {
         Assert.assertNull(swagger.getPath("dummy").getPost().getVendorExtensions().get("x-contentType"));
     }
 
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final AbstractJavaCodegen codegen = new P_AbstractJavaCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final AbstractJavaCodegen codegen = new P_AbstractJavaCodegen();
+        codegen.setHideGenerationTimestamp(true);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final AbstractJavaCodegen codegen = new P_AbstractJavaCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    private static class P_AbstractJavaCodegen extends AbstractJavaCodegen {
+        @Override
+        public CodegenType getTag() {
+            return null;
+        }
+
+        @Override
+        public String getName() {
+            return null;
+        }
+
+        @Override
+        public String getHelp() {
+            return null;
+        }
+    }
 }

modules/swagger-codegen/src/test/java/io/swagger/codegen/javascript/JavascriptClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.javascript;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.JavascriptClientCodegen;
+
+public class JavascriptClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final JavascriptClientCodegen codegen = new JavascriptClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final JavascriptClientCodegen codegen = new JavascriptClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final JavascriptClientCodegen codegen = new JavascriptClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/javascript/JavascriptClosureAngularClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.javascript;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.JavascriptClosureAngularClientCodegen;
+
+public class JavascriptClosureAngularClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final JavascriptClosureAngularClientCodegen codegen = new JavascriptClosureAngularClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final JavascriptClosureAngularClientCodegen codegen = new JavascriptClosureAngularClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final JavascriptClosureAngularClientCodegen codegen = new JavascriptClosureAngularClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/lua/LuaClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.lua;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.LuaClientCodegen;
+
+public class LuaClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final LuaClientCodegen codegen = new LuaClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final LuaClientCodegen codegen = new LuaClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final LuaClientCodegen codegen = new LuaClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/objc/ObjcClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.objc;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.ObjcClientCodegen;
+
+public class ObjcClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final ObjcClientCodegen codegen = new ObjcClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final ObjcClientCodegen codegen = new ObjcClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final ObjcClientCodegen codegen = new ObjcClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/perl/PerlClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.perl;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.PerlClientCodegen;
+
+public class PerlClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final PerlClientCodegen codegen = new PerlClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final PerlClientCodegen codegen = new PerlClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final PerlClientCodegen codegen = new PerlClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/php/PhpClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.php;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.PhpClientCodegen;
+
+public class PhpClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final PhpClientCodegen codegen = new PhpClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final PhpClientCodegen codegen = new PhpClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final PhpClientCodegen codegen = new PhpClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/phpsymfony/SymfonyServerCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.phpsymfony;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.SymfonyServerCodegen;
+
+public class SymfonyServerCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final SymfonyServerCodegen codegen = new SymfonyServerCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final SymfonyServerCodegen codegen = new SymfonyServerCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final SymfonyServerCodegen codegen = new SymfonyServerCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/python/PythonClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.python;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.PythonClientCodegen;
+
+public class PythonClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final PythonClientCodegen codegen = new PythonClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final PythonClientCodegen codegen = new PythonClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final PythonClientCodegen codegen = new PythonClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/r/RClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.r;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.RClientCodegen;
+
+public class RClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final RClientCodegen codegen = new RClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final RClientCodegen codegen = new RClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final RClientCodegen codegen = new RClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/ruby/RubyClientCodegenTest.java

@@ -3,6 +3,7 @@ package io.swagger.codegen.ruby;
 import io.swagger.codegen.ClientOpts;
 import io.swagger.codegen.ClientOptInput;
 import io.swagger.codegen.CodegenConfig;
+import io.swagger.codegen.CodegenConstants;
 import io.swagger.codegen.DefaultGenerator;
 import io.swagger.codegen.languages.RubyClientCodegen;
 import io.swagger.models.Swagger;
@@ -10,6 +11,7 @@ import io.swagger.parser.SwaggerParser;
 
 import org.apache.commons.io.FileUtils;
 import org.junit.rules.TemporaryFolder;
+import org.testng.Assert;
 import org.testng.annotations.AfterMethod;
 import org.testng.annotations.BeforeMethod;
 import org.testng.annotations.Test;
@@ -18,7 +20,6 @@ import java.io.File;
 import java.nio.charset.StandardCharsets;
 import java.util.List;
 
-import static org.junit.Assert.fail;
 import static org.testng.Assert.*;
 
 /**
@@ -63,4 +64,32 @@ public class RubyClientCodegenTest {
       }
   }
 
+  @Test
+  public void testInitialConfigValues() throws Exception {
+      final RubyClientCodegen codegen = new RubyClientCodegen();
+      codegen.processOpts();
+
+      Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+      Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+  }
+
+  @Test
+  public void testSettersForConfigValues() throws Exception {
+      final RubyClientCodegen codegen = new RubyClientCodegen();
+      codegen.setHideGenerationTimestamp(false);
+      codegen.processOpts();
+
+      Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+      Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+  }
+
+  @Test
+  public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+      final RubyClientCodegen codegen = new RubyClientCodegen();
+      codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+      codegen.processOpts();
+
+      Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+      Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+  }
 }

modules/swagger-codegen/src/test/java/io/swagger/codegen/rust/RustClientCodegenTest.java

@@ -0,0 +1,40 @@
+package io.swagger.codegen.rust;
+
+import org.testng.Assert;
+import org.testng.annotations.Test;
+
+import io.swagger.codegen.CodegenConstants;
+import io.swagger.codegen.languages.RustClientCodegen;
+
+public class RustClientCodegenTest {
+
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final RustClientCodegen codegen = new RustClientCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final RustClientCodegen codegen = new RustClientCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final RustClientCodegen codegen = new RustClientCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+}

modules/swagger-codegen/src/test/java/io/swagger/codegen/swift/SwiftCodegenTest.java

@@ -1,8 +1,8 @@
 package io.swagger.codegen.swift;
 
+import io.swagger.codegen.CodegenConstants;
 import io.swagger.codegen.CodegenOperation;
 import io.swagger.codegen.DefaultCodegen;
-import io.swagger.codegen.InlineModelResolver;
 import io.swagger.codegen.languages.SwiftCodegen;
 import io.swagger.models.Operation;
 import io.swagger.models.Swagger;
@@ -106,4 +106,33 @@ public class SwiftCodegenTest {
         Assert.assertEquals(podAuthors, swaggerDevs);
     }
 
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final SwiftCodegen codegen = new SwiftCodegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final SwiftCodegen codegen = new SwiftCodegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final SwiftCodegen codegen = new SwiftCodegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
 }

modules/swagger-codegen/src/test/java/io/swagger/codegen/swift3/Swift3CodegenTest.java

@@ -1,5 +1,6 @@
 package io.swagger.codegen.swift3;
 
+import io.swagger.codegen.CodegenConstants;
 import io.swagger.codegen.CodegenOperation;
 import io.swagger.codegen.DefaultCodegen;
 import io.swagger.codegen.languages.Swift3Codegen;
@@ -122,4 +123,33 @@ public class Swift3CodegenTest {
         Assert.assertEquals(podAuthors, swaggerDevs);
     }
 
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final Swift3Codegen codegen = new Swift3Codegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final Swift3Codegen codegen = new Swift3Codegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final Swift3Codegen codegen = new Swift3Codegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
 }

modules/swagger-codegen/src/test/java/io/swagger/codegen/swift4/Swift4CodegenTest.java

@@ -1,5 +1,6 @@
 package io.swagger.codegen.swift4;
 
+import io.swagger.codegen.CodegenConstants;
 import io.swagger.codegen.CodegenOperation;
 import io.swagger.codegen.DefaultCodegen;
 import io.swagger.codegen.languages.Swift4Codegen;
@@ -122,4 +123,33 @@ public class Swift4CodegenTest {
         Assert.assertEquals(podAuthors, swaggerDevs);
     }
 
+    @Test
+    public void testInitialConfigValues() throws Exception {
+        final Swift4Codegen codegen = new Swift4Codegen();
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.TRUE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), true);
+    }
+
+    @Test
+    public void testSettersForConfigValues() throws Exception {
+        final Swift4Codegen codegen = new Swift4Codegen();
+        codegen.setHideGenerationTimestamp(false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
+    @Test
+    public void testAdditionalPropertiesPutForConfigValues() throws Exception {
+        final Swift4Codegen codegen = new Swift4Codegen();
+        codegen.additionalProperties().put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, false);
+        codegen.processOpts();
+
+        Assert.assertEquals(codegen.additionalProperties().get(CodegenConstants.HIDE_GENERATION_TIMESTAMP), Boolean.FALSE);
+        Assert.assertEquals(codegen.isHideGenerationTimestamp(), false);
+    }
+
 }