diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenModel.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenModel.java
index 438eb191294..76fcbc3d21c 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenModel.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenModel.java
@@ -20,6 +20,7 @@ public class CodegenModel {
     public List<CodegenProperty> requiredVars = new ArrayList<CodegenProperty>(); // a list of required properties
     public List<CodegenProperty> optionalVars = new ArrayList<CodegenProperty>(); // a list of optional properties
     public List<CodegenProperty> allVars;
+    public List<CodegenProperty> parentVars = new ArrayList<>();
     public Map<String, Object> allowableValues;
 
     // Sorted sets of required parameters.
@@ -27,7 +28,7 @@ public class CodegenModel {
     public Set<String> allMandatory;
 
     public Set<String> imports = new TreeSet<String>();
-    public Boolean hasVars, emptyVars, hasMoreModels, hasEnums, isEnum, hasRequired;
+    public Boolean hasVars, emptyVars, hasMoreModels, hasEnums, isEnum, hasRequired,hasChildrens;
     public ExternalDocs externalDocs;
 
     public Map<String, Object> vendorExtensions;
@@ -109,6 +110,10 @@ public class CodegenModel {
             return false;
         if (externalDocs != null ? !externalDocs.equals(that.externalDocs) : that.externalDocs != null)
             return false;
+        if (!Objects.equals(hasChildrens, that.hasChildrens))
+            return false;
+        if (!Objects.equals(parentVars, that.parentVars))
+            return false;
         return vendorExtensions != null ? vendorExtensions.equals(that.vendorExtensions) : that.vendorExtensions == null;
 
     }
@@ -145,6 +150,8 @@ public class CodegenModel {
         result = 31 * result + (isEnum != null ? isEnum.hashCode() : 0);
         result = 31 * result + (externalDocs != null ? externalDocs.hashCode() : 0);
         result = 31 * result + (vendorExtensions != null ? vendorExtensions.hashCode() : 0);
+        result = 31 * result + Objects.hash(hasChildrens);
+        result = 31 * result + Objects.hash(parentVars);
         return result;
     }
 }
diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenProperty.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenProperty.java
index d58a1a81b1d..558a280ca03 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenProperty.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/CodegenProperty.java
@@ -2,8 +2,9 @@ package io.swagger.codegen;
 
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
-public class CodegenProperty {
+public class CodegenProperty implements Cloneable {
     public String baseName, complexType, getter, setter, description, datatype, datatypeWithEnum,
             name, min, max, defaultValue, defaultValueWithParam, baseType, containerType;
 
@@ -43,6 +44,8 @@ public class CodegenProperty {
     public CodegenProperty items;
     public Map<String, Object> vendorExtensions;
     public Boolean hasValidation; // true if pattern, maximum, etc are set (only used in the mustache template)
+    public String parent;
+    public String parentClass;
 
     @Override
     public String toString() {
@@ -105,6 +108,8 @@ public class CodegenProperty {
         result = prime * result + ((isDateTime == null) ? 0 : isDateTime.hashCode());
         result = prime * result + ((isMapContainer == null) ? 0 : isMapContainer.hashCode());
         result = prime * result + ((isListContainer == null) ? 0 : isListContainer.hashCode());
+        result = prime * result + Objects.hashCode(parent);
+        result = prime * result + Objects.hashCode(parentClass);
         return result;
     }
 
@@ -256,6 +261,21 @@ public class CodegenProperty {
         if (this.isMapContainer != other.isMapContainer && (this.isMapContainer == null || !this.isMapContainer.equals(other.isMapContainer))) {
             return false;
         }
+        if (!Objects.equals(this.parent, other.parent)) {
+            return false;
+        }
+        if (!Objects.equals(this.parentClass, other.parentClass)) {
+            return false;
+        }
         return true;
     }
+
+    @Override
+    public CodegenProperty clone() {
+        try {
+            return (CodegenProperty) super.clone();
+        } catch (CloneNotSupportedException e) {
+            throw new IllegalStateException(e);
+        }
+    }
 }
diff --git a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NancyFXServerCodegen.java b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NancyFXServerCodegen.java
index a908143bdb2..9c7afce6d9e 100644
--- a/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NancyFXServerCodegen.java
+++ b/modules/swagger-codegen/src/main/java/io/swagger/codegen/languages/NancyFXServerCodegen.java
@@ -19,6 +19,7 @@ import static io.swagger.codegen.CodegenType.SERVER;
 import static java.util.Arrays.asList;
 import static java.util.UUID.randomUUID;
 import static org.apache.commons.lang3.StringUtils.capitalize;
+import io.swagger.codegen.CodegenModel;
 import io.swagger.codegen.CodegenOperation;
 import io.swagger.codegen.CodegenProperty;
 import io.swagger.codegen.CodegenType;
@@ -29,19 +30,24 @@ import io.swagger.models.properties.StringProperty;
 
 import java.io.File;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.Set;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.google.common.base.Predicate;
+import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.BiMap;
 import com.google.common.collect.HashBiMap;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
+import com.google.common.collect.Multimap;
 
 public class NancyFXServerCodegen extends AbstractCSharpCodegen {
     private static final Logger log = LoggerFactory.getLogger(NancyFXServerCodegen.class);
@@ -56,6 +62,8 @@ public class NancyFXServerCodegen extends AbstractCSharpCodegen {
     private final String packageGuid = "{" + randomUUID().toString().toUpperCase() + "}";
 
     private final Map<String, DependencyInfo> dependencies = new HashMap<>();
+    private final Set<String> parentModels = new HashSet<>();
+    private final Multimap<String, CodegenModel> parentChildrens = ArrayListMultimap.create();
     private final BiMap<String, String> modelNameMapping = HashBiMap.create();
 
     public NancyFXServerCodegen() {
@@ -205,12 +213,89 @@ public class NancyFXServerCodegen extends AbstractCSharpCodegen {
         }
     }
 
+    @Override
+    public Map<String, Object> postProcessAllModels(final Map<String, Object> models) {
+        final Map<String, Object> processed =  super.postProcessAllModels(models);
+        postProcessParentModels(models);
+        return processed;
+    }
+
+    private void postProcessParentModels(final Map<String, Object> models) {
+        log.info("Processing parents:  " + parentModels);
+        for (final String parent : parentModels) {
+            final CodegenModel parentModel = modelByName(parent, models);
+            parentModel.hasChildrens = true;
+            final Collection<CodegenModel> childrens = parentChildrens.get(parent);
+            for (final CodegenModel child : childrens) {
+                processParentPropertiesInChildModel(parentModel, child);
+            }
+        }
+    }
+
+    private CodegenModel modelByName(final String name, final Map<String, Object> models) {
+        final Object data = models.get(name);
+        if (data instanceof Map) {
+            final Map<?, ?> dataMap = (Map<?, ?>) data;
+            final Object dataModels = dataMap.get("models");
+            if (dataModels instanceof List) {
+                final List<?> dataModelsList = (List<?>) dataModels;
+                for (final Object entry : dataModelsList) {
+                    if (entry instanceof Map) {
+                        final Map<?, ?> entryMap = (Map<?, ?>) entry;
+                        final Object model = entryMap.get("model");
+                        if (model instanceof CodegenModel) {
+                            return (CodegenModel) model;
+                        }
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    private void processParentPropertiesInChildModel(final CodegenModel parent, final CodegenModel child) {
+        final Map<String, CodegenProperty> childPropertiesByName = new HashMap<>(child.vars.size());
+        for (final CodegenProperty property : child.vars) {
+            childPropertiesByName.put(property.name, property);
+        }
+        CodegenProperty previousParentVar = null;
+        for (final CodegenProperty property : parent.vars) {
+            final CodegenProperty duplicatedByParent = childPropertiesByName.get(property.name);
+            if (duplicatedByParent != null) {
+                log.info(String.format("Property: '%s' in '%s' model is inherited from '%s'" ,
+                        property.name, child.classname, parent.classname));
+                duplicatedByParent.parent = parent.name;
+                duplicatedByParent.parentClass = parent.classname;
+
+                final CodegenProperty parentVar = duplicatedByParent.clone();
+                parentVar.hasMore = false;
+                child.parentVars.add(parentVar);
+                if (previousParentVar != null) {
+                    previousParentVar.hasMore = true;
+                }
+                previousParentVar = parentVar;
+            }
+        }
+    }
+
+    @Override
+    public void postProcessModelProperty(final CodegenModel model, final CodegenProperty property) {
+        super.postProcessModelProperty(model, property);
+        if (!isNullOrEmpty(model.parent)) {
+            parentModels.add(model.parent);
+            if (!parentChildrens.containsEntry(model.parent, model)) {
+                parentChildrens.put(model.parent, model);
+            }
+        }
+    }
+
     @Override
     public String toEnumVarName(final String name, final String datatype) {
         final String enumName = camelize(
                 sanitizeName(name)
                 .replaceFirst("^_", "")
-                .replaceFirst("_$", ""));
+                .replaceFirst("_$", "")
+                .replaceAll("-", "_"));
         final String result;
         if (enumName.matches("\\d.*")) {
             result = "_" + enumName;
@@ -269,7 +354,7 @@ public class NancyFXServerCodegen extends AbstractCSharpCodegen {
 
     @Override
     public String toEnumName(final CodegenProperty property) {
-        return sanitizeName(camelize(property.name)) ;
+        return sanitizeName(camelize(property.name));
     }
 
     @Override
diff --git a/modules/swagger-codegen/src/main/resources/nancyfx/innerModelEnum.mustache b/modules/swagger-codegen/src/main/resources/nancyfx/innerModelEnum.mustache
index 19e4731f2cf..54d23b1d8d5 100644
--- a/modules/swagger-codegen/src/main/resources/nancyfx/innerModelEnum.mustache
+++ b/modules/swagger-codegen/src/main/resources/nancyfx/innerModelEnum.mustache
@@ -1 +1 @@
-public enum {{#datatypeWithEnum}}{{.}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{classname}}{{/datatypeWithEnum}} { {{#allowableValues}}{{#enumVars}}{{{name}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}} };
\ No newline at end of file
+public enum {{#parentClass}}{{parentClass}}{{/parentClass}}{{^parentClass}}{{classname}}{{/parentClass}}{{#datatypeWithEnum}}{{.}}{{/datatypeWithEnum}}{{^datatypeWithEnum}}{{classname}}{{/datatypeWithEnum}} { {{#allowableValues}}{{#enumVars}}{{{name}}}{{^-last}}, {{/-last}}{{/enumVars}}{{/allowableValues}} };
\ No newline at end of file
diff --git a/modules/swagger-codegen/src/main/resources/nancyfx/model.mustache b/modules/swagger-codegen/src/main/resources/nancyfx/model.mustache
index e199575a130..409bd60641a 100644
--- a/modules/swagger-codegen/src/main/resources/nancyfx/model.mustache
+++ b/modules/swagger-codegen/src/main/resources/nancyfx/model.mustache
@@ -10,40 +10,42 @@ using NodaTime;
 {{#models}}
 {{#model}}
 namespace {{packageName}}.{{packageContext}}.Models
-{   {{#vars}}{{#isEnum}}
-    {{>innerModelEnum}}{{/isEnum}}{{#items.isEnum}}
+{   {{#vars}}{{#isEnum}}{{^parent}}
+    {{>innerModelEnum}}{{/parent}}{{/isEnum}}{{#items.isEnum}}
     {{#items}}{{>innerModelEnum}}{{/items}}{{/items.isEnum}}{{/vars}}
 
     /// <summary>
     /// {{#description}}{{.}}{{/description}}{{^description}}{{classname}}{{/description}}
     /// </summary>
-    public sealed class {{classname}}: {{#parent}}{{{parent}}}, {{/parent}} IEquatable<{{classname}}>
-    { {{#vars}}
+    public {{^hasChildrens}}sealed {{/hasChildrens}}class {{classname}}: {{#parent}}{{{parent}}}, {{/parent}} IEquatable<{{classname}}>
+    { {{#vars}}{{^parent}}
         /// <summary>
         /// {{^description}}{{{name}}}{{/description}}{{#description}}{{description}}{{/description}}
         /// </summary>
         public {{>nullableDataType}} {{name}} { get; private set; }
-{{/vars}}
+{{/parent}}{{/vars}}
 
         /// <summary>
         /// Empty constructor required by some serializers.
         /// Use {{classname}}.Builder() for instance creation instead.
         /// </summary>
         [Obsolete]
-        public {{classname}}() {}
-
-        private {{classname}}({{#vars}}{{>nullableDataType}} {{name}}{{#hasMore}}, {{/hasMore}}{{/vars}})
+        public {{classname}}(){{#parent}} : base({{/parent}}{{#parentVars}}null{{#hasMore}}, {{/hasMore}}{{/parentVars}}{{#parent}}){{/parent}}
         {
-            {{#vars}}
+        }
+
+        {{#hasChildrens}}protected{{/hasChildrens}}{{^hasChildrens}}private{{/hasChildrens}} {{classname}}({{#vars}}{{>nullableDataType}} {{name}}{{#hasMore}}, {{/hasMore}}{{/vars}}){{#parent}} : base({{#parentVars}}{{name}}{{#hasMore}}, {{/hasMore}}{{/parentVars}}){{/parent}}
+        {
+            {{#vars}}{{^parent}}
             this.{{name}} = {{name}};
-            {{/vars}}
+            {{/parent}}{{/vars}}
         }
 
         /// <summary>
         /// Returns builder of {{classname}}.
         /// </summary>
         /// <returns>{{classname}}Builder</returns>
-        public static {{classname}}Builder Builder()
+        public static {{#parent}}new {{/parent}}{{classname}}Builder Builder()
         {
             return new {{classname}}Builder();
         }
@@ -53,7 +55,7 @@ namespace {{packageName}}.{{packageContext}}.Models
         /// Use it to change properties.
         /// </summary>
         /// <returns>{{classname}}Builder</returns>
-        public {{classname}}Builder With()
+        public {{#parent}}new {{/parent}}{{classname}}Builder With()
         {
             return Builder()
             {{#vars}}
diff --git a/modules/swagger-codegen/src/main/resources/nancyfx/modelMutable.mustache b/modules/swagger-codegen/src/main/resources/nancyfx/modelMutable.mustache
index bcded25eec8..038d4224eb1 100644
--- a/modules/swagger-codegen/src/main/resources/nancyfx/modelMutable.mustache
+++ b/modules/swagger-codegen/src/main/resources/nancyfx/modelMutable.mustache
@@ -10,14 +10,14 @@ using NodaTime;
 {{#models}}
 {{#model}}
 namespace {{packageName}}.{{packageContext}}.Models
-{   {{#vars}}{{#isEnum}}
-    {{>innerModelEnum}}{{/isEnum}}{{#items.isEnum}}
+{    {{#vars}}{{#isEnum}}{{^parent}}
+    {{>innerModelEnum}}{{/parent}}{{/isEnum}}{{#items.isEnum}}
     {{#items}}{{>innerModelEnum}}{{/items}}{{/items.isEnum}}{{/vars}}
 
-    /// <summary>
+/// <summary>
     /// {{#description}}{{.}}{{/description}}{{^description}}{{classname}}{{/description}}
     /// </summary>
-    public sealed class {{classname}}: {{#parent}}{{{parent}}}, {{/parent}} IEquatable<{{classname}}>
+    public {{^hasChildrens}}sealed {{/hasChildrens}}class {{classname}}: {{#parent}}{{{parent}}}, {{/parent}} IEquatable<{{classname}}>
     { {{#vars}}
         /// <summary>
         /// {{^description}}{{{name}}}{{/description}}{{#description}}{{description}}{{/description}}
diff --git a/modules/swagger-codegen/src/main/resources/nancyfx/nullableDataType.mustache b/modules/swagger-codegen/src/main/resources/nancyfx/nullableDataType.mustache
index c999b870119..534590a7f89 100644
--- a/modules/swagger-codegen/src/main/resources/nancyfx/nullableDataType.mustache
+++ b/modules/swagger-codegen/src/main/resources/nancyfx/nullableDataType.mustache
@@ -1 +1 @@
-{{&datatypeWithEnum}}{{#isEnum}}?{{/isEnum}}
\ No newline at end of file
+{{#isEnum}}{{#parentClass}}{{parentClass}}{{/parentClass}}{{^parentClass}}{{classname}}{{/parentClass}}{{/isEnum}}{{&datatypeWithEnum}}{{#isEnum}}?{{/isEnum}}
\ No newline at end of file