diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java
index a53ab1b85b..d98ecf30f6 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenModel.java
@@ -165,6 +165,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
     private boolean isAnyType;
     private boolean isUuid;
     private Map<String, CodegenProperty> requiredVarsMap;
+    private String ref;
 
     public String getAdditionalPropertiesType() {
         return additionalPropertiesType;
@@ -174,6 +175,16 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
         this.additionalPropertiesType = additionalPropertiesType;
     }
 
+    @Override
+    public String getRef() {
+        return ref;
+    }
+
+    @Override
+    public void setRef(String ref) {
+        this.ref = ref;
+    }
+
     public Set<String> getAllMandatory() {
         return allMandatory;
     }
@@ -929,6 +940,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
                 getUniqueItems() == that.getUniqueItems() &&
                 getExclusiveMinimum() == that.getExclusiveMinimum() &&
                 getExclusiveMaximum() == that.getExclusiveMaximum() &&
+                Objects.equals(ref, that.getRef()) &&
                 Objects.equals(requiredVarsMap, that.getRequiredVarsMap()) &&
                 Objects.equals(composedSchemas, that.composedSchemas) &&
                 Objects.equals(parent, that.parent) &&
@@ -1002,7 +1014,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
                 getMinItems(), getMaxLength(), getMinLength(), getExclusiveMinimum(), getExclusiveMaximum(), getMinimum(),
                 getMaximum(), getPattern(), getMultipleOf(), getItems(), getAdditionalProperties(), getIsModel(),
                 getAdditionalPropertiesIsAnyType(), hasDiscriminatorWithNonEmptyMapping,
-                isAnyType, getComposedSchemas(), hasMultipleTypes, isDecimal, isUuid, requiredVarsMap);
+                isAnyType, getComposedSchemas(), hasMultipleTypes, isDecimal, isUuid, requiredVarsMap, ref);
     }
 
     @Override
@@ -1100,6 +1112,7 @@ public class CodegenModel implements IJsonSchemaValidationProperties {
         sb.append(", isDecimal=").append(isDecimal);
         sb.append(", isUUID=").append(isUuid);
         sb.append(", requiredVarsMap=").append(requiredVarsMap);
+        sb.append(", ref=").append(ref);
         sb.append('}');
         return sb.toString();
     }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java
index c69b44cefc..c68734b7d4 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenParameter.java
@@ -112,6 +112,7 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
     private boolean hasMultipleTypes = false;
     private LinkedHashMap<String, CodegenMediaType> content;
     private Map<String, CodegenProperty> requiredVarsMap;
+    private String ref;
 
     public CodegenParameter copy() {
         CodegenParameter output = new CodegenParameter();
@@ -198,6 +199,9 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
         if (this.requiredVarsMap != null) {
             output.setRequiredVarsMap(this.requiredVarsMap);
         }
+        if (this.ref != null) {
+            output.setRef(this.ref);
+        }
         output.hasValidation = this.hasValidation;
         output.isNullable = this.isNullable;
         output.isDeprecated = this.isDeprecated;
@@ -234,7 +238,7 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
 
     @Override
     public int hashCode() {
-        return Objects.hash(isFormParam, isQueryParam, isPathParam, isHeaderParam, isCookieParam, isBodyParam, isContainer, isCollectionFormatMulti, isPrimitiveType, isModel, isExplode, baseName, paramName, dataType, datatypeWithEnum, dataFormat, collectionFormat, description, unescapedDescription, baseType, defaultValue, enumName, style, isDeepObject, isAllowEmptyValue, example, jsonSchema, isString, isNumeric, isInteger, isLong, isNumber, isFloat, isDouble, isDecimal, isByteArray, isBinary, isBoolean, isDate, isDateTime, isUuid, isUri, isEmail, isFreeFormObject, isAnyType, isArray, isMap, isFile, isEnum, _enum, allowableValues, items, mostInnerItems, additionalProperties, vars, requiredVars, vendorExtensions, hasValidation, getMaxProperties(), getMinProperties(), isNullable, isDeprecated, required, getMaximum(), getExclusiveMaximum(), getMinimum(), getExclusiveMinimum(), getMaxLength(), getMinLength(), getPattern(), getMaxItems(), getMinItems(), getUniqueItems(), contentType, multipleOf, isNull, additionalPropertiesIsAnyType, hasVars, hasRequired, isShort, isUnboundedInteger, hasDiscriminatorWithNonEmptyMapping, composedSchemas, hasMultipleTypes, schema, content, requiredVarsMap);
+        return Objects.hash(isFormParam, isQueryParam, isPathParam, isHeaderParam, isCookieParam, isBodyParam, isContainer, isCollectionFormatMulti, isPrimitiveType, isModel, isExplode, baseName, paramName, dataType, datatypeWithEnum, dataFormat, collectionFormat, description, unescapedDescription, baseType, defaultValue, enumName, style, isDeepObject, isAllowEmptyValue, example, jsonSchema, isString, isNumeric, isInteger, isLong, isNumber, isFloat, isDouble, isDecimal, isByteArray, isBinary, isBoolean, isDate, isDateTime, isUuid, isUri, isEmail, isFreeFormObject, isAnyType, isArray, isMap, isFile, isEnum, _enum, allowableValues, items, mostInnerItems, additionalProperties, vars, requiredVars, vendorExtensions, hasValidation, getMaxProperties(), getMinProperties(), isNullable, isDeprecated, required, getMaximum(), getExclusiveMaximum(), getMinimum(), getExclusiveMinimum(), getMaxLength(), getMinLength(), getPattern(), getMaxItems(), getMinItems(), getUniqueItems(), contentType, multipleOf, isNull, additionalPropertiesIsAnyType, hasVars, hasRequired, isShort, isUnboundedInteger, hasDiscriminatorWithNonEmptyMapping, composedSchemas, hasMultipleTypes, schema, content, requiredVarsMap, ref);
     }
 
     @Override
@@ -290,6 +294,7 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
                 getExclusiveMaximum() == that.getExclusiveMaximum() &&
                 getExclusiveMinimum() == that.getExclusiveMinimum() &&
                 getUniqueItems() == that.getUniqueItems() &&
+                Objects.equals(ref, that.getRef()) &&
                 Objects.equals(requiredVarsMap, that.getRequiredVarsMap()) &&
                 Objects.equals(content, that.getContent()) &&
                 Objects.equals(schema, that.getSchema()) &&
@@ -421,6 +426,7 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
         sb.append(", schema=").append(schema);
         sb.append(", content=").append(content);
         sb.append(", requiredVarsMap=").append(requiredVarsMap);
+        sb.append(", ref=").append(ref);
         sb.append('}');
         return sb.toString();
     }
@@ -827,5 +833,11 @@ public class CodegenParameter implements IJsonSchemaValidationProperties {
 
     @Override
     public void setRequiredVarsMap(Map<String, CodegenProperty> requiredVarsMap) { this.requiredVarsMap=requiredVarsMap; }
+
+    @Override
+    public String getRef() { return ref; }
+
+    @Override
+    public void setRef(String ref) { this.ref=ref; }
 }
 
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java
index 8d92cd6a0f..ddd1ba5e4a 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenProperty.java
@@ -195,6 +195,7 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
     private CodegenComposedSchemas composedSchemas = null;
     private boolean hasMultipleTypes = false;
     private Map<String, CodegenProperty> requiredVarsMap;
+    private String ref;
 
     public String getBaseName() {
         return baseName;
@@ -660,6 +661,16 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
         return composedSchemas;
     }
 
+    @Override
+    public void setRef(String ref) {
+        this.ref = ref;
+    }
+
+    @Override
+    public String getRef() {
+        return ref;
+    }
+
     @Override
     public CodegenProperty clone() {
         try {
@@ -694,6 +705,9 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
             if (this.requiredVarsMap != null) {
                 cp.setRequiredVarsMap(this.requiredVarsMap);
             }
+            if (this.ref != null) {
+                cp.setRef(this.ref);
+            }
 
             return cp;
         } catch (CloneNotSupportedException e) {
@@ -977,6 +991,7 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
         sb.append(", composedSchemas=").append(composedSchemas);
         sb.append(", hasMultipleTypes=").append(hasMultipleTypes);
         sb.append(", requiredVarsMap=").append(requiredVarsMap);
+        sb.append(", ref=").append(ref);
         sb.append('}');
         return sb.toString();
     }
@@ -1035,6 +1050,7 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
                 getAdditionalPropertiesIsAnyType() == that.getAdditionalPropertiesIsAnyType() &&
                 getHasVars() == that.getHasVars() &&
                 getHasRequired() == that.getHasRequired() &&
+                Objects.equals(ref, that.getRef()) &&
                 Objects.equals(requiredVarsMap, that.getRequiredVarsMap()) &&
                 Objects.equals(composedSchemas, that.composedSchemas) &&
                 Objects.equals(openApiType, that.openApiType) &&
@@ -1099,6 +1115,7 @@ public class CodegenProperty implements Cloneable, IJsonSchemaValidationProperti
                 vendorExtensions, hasValidation, isInherited, discriminatorValue, nameInCamelCase,
                 nameInSnakeCase, enumName, maxItems, minItems, isXmlAttribute, xmlPrefix, xmlName,
                 xmlNamespace, isXmlWrapped, isNull, additionalPropertiesIsAnyType, hasVars, hasRequired,
-                hasDiscriminatorWithNonEmptyMapping, composedSchemas, hasMultipleTypes, requiredVarsMap);
+                hasDiscriminatorWithNonEmptyMapping, composedSchemas, hasMultipleTypes, requiredVarsMap,
+                ref);
     }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java
index 6cdcb3837b..c30c437414 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/CodegenResponse.java
@@ -90,6 +90,7 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
     private boolean hasMultipleTypes = false;
     private LinkedHashMap<String, CodegenMediaType> content;
     private Map<String, CodegenProperty> requiredVarsMap;
+    private String ref;
 
     @Override
     public int hashCode() {
@@ -102,7 +103,7 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
                 getMinLength(), exclusiveMinimum, exclusiveMaximum, getMinimum(), getMaximum(), getPattern(),
                 is1xx, is2xx, is3xx, is4xx, is5xx, additionalPropertiesIsAnyType, hasVars, hasRequired,
                 hasDiscriminatorWithNonEmptyMapping, composedSchemas, hasMultipleTypes, responseHeaders, content,
-                requiredVarsMap);
+                requiredVarsMap, ref);
     }
 
     @Override
@@ -151,6 +152,7 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
                 getAdditionalPropertiesIsAnyType() == that.getAdditionalPropertiesIsAnyType() &&
                 getHasVars() == that.getHasVars() &&
                 getHasRequired() == that.getHasRequired() &&
+                Objects.equals(ref, that.getRef()) &&
                 Objects.equals(requiredVarsMap, that.getRequiredVarsMap()) &&
                 Objects.equals(content, that.getContent()) &&
                 Objects.equals(responseHeaders, that.getResponseHeaders()) &&
@@ -542,6 +544,7 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
         sb.append(", responseHeaders=").append(responseHeaders);
         sb.append(", content=").append(content);
         sb.append(", requiredVarsMap=").append(requiredVarsMap);
+        sb.append(", ref=").append(ref);
         sb.append('}');
         return sb.toString();
     }
@@ -675,4 +678,10 @@ public class CodegenResponse implements IJsonSchemaValidationProperties {
 
     @Override
     public void setRequiredVarsMap(Map<String, CodegenProperty> requiredVarsMap) { this.requiredVarsMap=requiredVarsMap; }
+
+    @Override
+    public String getRef() { return ref; }
+
+    @Override
+    public void setRef(String ref) { this.ref=ref; }
 }
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
index 51d3627317..666b0b9955 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultCodegen.java
@@ -2892,6 +2892,9 @@ public class DefaultCodegen implements CodegenConfig {
             // schema by unaliasSchema and one of the above code paths will be taken
             ;
         }
+        if (schema.get$ref() != null) {
+            m.setRef(schema.get$ref());
+        }
 
         if (schema instanceof ComposedSchema) {
             updateModelForComposedSchema(m, schema, allDefinitions);
@@ -3763,6 +3766,9 @@ public class DefaultCodegen implements CodegenConfig {
             // referenced model
             ;
         }
+        if (p.get$ref() != null) {
+            property.setRef(p.get$ref());
+        }
 
         boolean isAnyTypeWithNothingElseSet = (ModelUtils.isAnyType(p) &&
                 (p.getProperties() == null || p.getProperties().isEmpty()) &&
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java
index 1bb16a6bc3..4eacde57ab 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/IJsonSchemaValidationProperties.java
@@ -165,6 +165,10 @@ public interface IJsonSchemaValidationProperties {
 
     void setIsAnyType(boolean isAnyType);
 
+    String getRef();
+
+    void setRef(String ref);
+
     CodegenComposedSchemas getComposedSchemas();
 
     void setComposedSchemas(CodegenComposedSchemas composedSchemas);
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java
index 09bc8dc2c8..1816a518f7 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/utils/ModelUtils.java
@@ -1626,6 +1626,10 @@ public class ModelUtils {
      * @return boolean
      */
     public static boolean isAnyType(Schema schema) {
+        // $ref is not a type, it is a keyword
+        // TODO remove the ref check here, or pass in the spec version
+        // openapi 3.1.0 specs allow ref to be adjacent to any keyword
+        // openapi 3.0.3 and earlier do not allow adjacent keywords to refs
         return (schema.get$ref() == null && schema.getType() == null);
     }
 
diff --git a/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java b/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java
index 0216276e54..7d89a3b029 100644
--- a/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java
+++ b/samples/server/petstore/java-undertow/src/main/java/org/openapitools/handler/PathHandlerInterface.java
@@ -539,10 +539,10 @@ public interface PathHandlerInterface {
      * <p><b>Response headers</b>: [CodegenProperty{openApiType='integer', baseName='X-Rate-Limit', complexType='null', getter='getxRateLimit', setter='setxRateLimit', description='calls per hour allowed by the user', dataType='Integer', datatypeWithEnum='Integer', dataFormat='int32', name='xRateLimit', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.X-Rate-Limit;', baseType='Integer', containerType='null', title='null', unescapedDescription='calls per hour allowed by the user', maxLength=null, minLength=null, pattern='null', example='null', jsonSchema='{
   "type" : "integer",
   "format" : "int32"
-}', minimum='null', maximum='null', exclusiveMinimum=false, exclusiveMaximum=false, required=false, deprecated=false, hasMoreNonReadOnly=false, isPrimitiveType=true, isModel=false, isContainer=false, isString=false, isNumeric=true, isInteger=true, isShort=true, isLong=false, isUnboundedInteger=false, isNumber=false, isFloat=false, isDouble=false, isDecimal=false, isByteArray=false, isBinary=false, isFile=false, isBoolean=false, isDate=false, isDateTime=false, isUuid=false, isUri=false, isEmail=false, isFreeFormObject=false, isArray=false, isMap=false, isEnum=false, isInnerEnum=false, isAnyType=false, isReadOnly=false, isWriteOnly=false, isNullable=false, isSelfReference=false, isCircularReference=false, isDiscriminator=false, _enum=null, allowableValues=null, items=null, additionalProperties=null, vars=[], requiredVars=[], mostInnerItems=null, vendorExtensions={}, hasValidation=false, isInherited=false, discriminatorValue='null', nameInCamelCase='XRateLimit', nameInSnakeCase='X_RATE_LIMIT', enumName='null', maxItems=null, minItems=null, maxProperties=null, minProperties=null, uniqueItems=false, multipleOf=null, isXmlAttribute=false, xmlPrefix='null', xmlName='null', xmlNamespace='null', isXmlWrapped=false, isNull=false, getAdditionalPropertiesIsAnyType=false, getHasVars=false, getHasRequired=false, getHasDiscriminatorWithNonEmptyMapping=false, composedSchemas=null, hasMultipleTypes=false, requiredVarsMap=null}, CodegenProperty{openApiType='string', baseName='X-Expires-After', complexType='Date', getter='getxExpiresAfter', setter='setxExpiresAfter', description='date in UTC when token expires', dataType='Date', datatypeWithEnum='Date', dataFormat='date-time', name='xExpiresAfter', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.X-Expires-After;', baseType='Date', containerType='null', title='null', unescapedDescription='date in UTC when token expires', maxLength=null, minLength=null, pattern='null', example='null', jsonSchema='{
+}', minimum='null', maximum='null', exclusiveMinimum=false, exclusiveMaximum=false, required=false, deprecated=false, hasMoreNonReadOnly=false, isPrimitiveType=true, isModel=false, isContainer=false, isString=false, isNumeric=true, isInteger=true, isShort=true, isLong=false, isUnboundedInteger=false, isNumber=false, isFloat=false, isDouble=false, isDecimal=false, isByteArray=false, isBinary=false, isFile=false, isBoolean=false, isDate=false, isDateTime=false, isUuid=false, isUri=false, isEmail=false, isFreeFormObject=false, isArray=false, isMap=false, isEnum=false, isInnerEnum=false, isAnyType=false, isReadOnly=false, isWriteOnly=false, isNullable=false, isSelfReference=false, isCircularReference=false, isDiscriminator=false, _enum=null, allowableValues=null, items=null, additionalProperties=null, vars=[], requiredVars=[], mostInnerItems=null, vendorExtensions={}, hasValidation=false, isInherited=false, discriminatorValue='null', nameInCamelCase='XRateLimit', nameInSnakeCase='X_RATE_LIMIT', enumName='null', maxItems=null, minItems=null, maxProperties=null, minProperties=null, uniqueItems=false, multipleOf=null, isXmlAttribute=false, xmlPrefix='null', xmlName='null', xmlNamespace='null', isXmlWrapped=false, isNull=false, getAdditionalPropertiesIsAnyType=false, getHasVars=false, getHasRequired=false, getHasDiscriminatorWithNonEmptyMapping=false, composedSchemas=null, hasMultipleTypes=false, requiredVarsMap=null, ref=null}, CodegenProperty{openApiType='string', baseName='X-Expires-After', complexType='Date', getter='getxExpiresAfter', setter='setxExpiresAfter', description='date in UTC when token expires', dataType='Date', datatypeWithEnum='Date', dataFormat='date-time', name='xExpiresAfter', min='null', max='null', defaultValue='null', defaultValueWithParam=' = data.X-Expires-After;', baseType='Date', containerType='null', title='null', unescapedDescription='date in UTC when token expires', maxLength=null, minLength=null, pattern='null', example='null', jsonSchema='{
   "type" : "string",
   "format" : "date-time"
-}', minimum='null', maximum='null', exclusiveMinimum=false, exclusiveMaximum=false, required=false, deprecated=false, hasMoreNonReadOnly=false, isPrimitiveType=false, isModel=false, isContainer=false, isString=false, isNumeric=false, isInteger=false, isShort=false, isLong=false, isUnboundedInteger=false, isNumber=false, isFloat=false, isDouble=false, isDecimal=false, isByteArray=false, isBinary=false, isFile=false, isBoolean=false, isDate=false, isDateTime=true, isUuid=false, isUri=false, isEmail=false, isFreeFormObject=false, isArray=false, isMap=false, isEnum=false, isInnerEnum=false, isAnyType=false, isReadOnly=false, isWriteOnly=false, isNullable=false, isSelfReference=false, isCircularReference=false, isDiscriminator=false, _enum=null, allowableValues=null, items=null, additionalProperties=null, vars=[], requiredVars=[], mostInnerItems=null, vendorExtensions={}, hasValidation=false, isInherited=false, discriminatorValue='null', nameInCamelCase='XExpiresAfter', nameInSnakeCase='X_EXPIRES_AFTER', enumName='null', maxItems=null, minItems=null, maxProperties=null, minProperties=null, uniqueItems=false, multipleOf=null, isXmlAttribute=false, xmlPrefix='null', xmlName='null', xmlNamespace='null', isXmlWrapped=false, isNull=false, getAdditionalPropertiesIsAnyType=false, getHasVars=false, getHasRequired=false, getHasDiscriminatorWithNonEmptyMapping=false, composedSchemas=null, hasMultipleTypes=false, requiredVarsMap=null}]</p>
+}', minimum='null', maximum='null', exclusiveMinimum=false, exclusiveMaximum=false, required=false, deprecated=false, hasMoreNonReadOnly=false, isPrimitiveType=false, isModel=false, isContainer=false, isString=false, isNumeric=false, isInteger=false, isShort=false, isLong=false, isUnboundedInteger=false, isNumber=false, isFloat=false, isDouble=false, isDecimal=false, isByteArray=false, isBinary=false, isFile=false, isBoolean=false, isDate=false, isDateTime=true, isUuid=false, isUri=false, isEmail=false, isFreeFormObject=false, isArray=false, isMap=false, isEnum=false, isInnerEnum=false, isAnyType=false, isReadOnly=false, isWriteOnly=false, isNullable=false, isSelfReference=false, isCircularReference=false, isDiscriminator=false, _enum=null, allowableValues=null, items=null, additionalProperties=null, vars=[], requiredVars=[], mostInnerItems=null, vendorExtensions={}, hasValidation=false, isInherited=false, discriminatorValue='null', nameInCamelCase='XExpiresAfter', nameInSnakeCase='X_EXPIRES_AFTER', enumName='null', maxItems=null, minItems=null, maxProperties=null, minProperties=null, uniqueItems=false, multipleOf=null, isXmlAttribute=false, xmlPrefix='null', xmlName='null', xmlNamespace='null', isXmlWrapped=false, isNull=false, getAdditionalPropertiesIsAnyType=false, getHasVars=false, getHasRequired=false, getHasDiscriminatorWithNonEmptyMapping=false, composedSchemas=null, hasMultipleTypes=false, requiredVarsMap=null, ref=null}]</p>
      *
      * <p><b>Produces</b>: [{mediaType=application/xml}, {mediaType=application/json}]</p>
      * <p><b>Returns</b>: {@link String}</p>