Fix test case

Author: Ignacio-Vidal

samples/client/petstore/csharp/generichost/latest/NullTypes/src/Org.OpenAPITools/Client/ClientUtils.cs

@@ -301,6 +301,35 @@ public static bool IsJsonMime(string mime)
             throw new JsonException("The specified discriminator was not found.");
         }
 
+        /// <summary>
+        /// Determines if the provided header is a content header
+        /// </summary>
+        /// <param name="header">The header to check</param>
+        /// <returns>True if a content header; False otherwise</returns>
+        public static bool IsContentHeader(string header)
+        {
+            return ContentHeaders.Contains(header.ToLowerInvariant());
+        }
+
+        /// <summary>
+        /// The collection of content headers as per
+        /// https://learn.microsoft.com/en-us/dotnet/api/system.net.http.httpcontent.headers
+        /// </summary>
+        private static readonly string[] ContentHeaders = new String[] 
+        {
+            "allow",
+            "content-encoding",
+            "content-disposition",
+            "content-language",
+            "content-length",
+            "content-location",
+            "content-md5",
+            "content-range",
+            "content-type",
+            "expires",
+            "last-modified"
+        };
+
         /// <summary>
         /// The base path of the API
         /// </summary>

samples/server/others/kotlin-server/polymorphism-allof-and-discriminator/README.md

@@ -1,4 +1,4 @@
-# org.openapitools.server - Kotlin Server library for Polymorphism example with allOf and discriminator
+# org.openapitools.server - Kotlin Server library for Basic polymorphism example with discriminator
 
 No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
 

samples/server/others/kotlin-server/polymorphism-allof-and-discriminator/src/main/kotlin/org/openapitools/server/models/Cat.kt

@@ -1,5 +1,5 @@
 /**
- * Polymorphism example with allOf and discriminator
+ * Basic polymorphism example with discriminator
  * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
  *
  * The version of the OpenAPI document: 1.0
@@ -11,24 +11,22 @@
 */
 package org.openapitools.server.models
 
-import org.openapitools.server.models.Pet
 
 /**
- * A representation of a cat
+ * A pet cat
  * @param huntingSkill The measured skill for hunting
+ * @param petType 
  */
 data class Cat(
     /* The measured skill for hunting */
 
     @field:com.fasterxml.jackson.annotation.JsonProperty("huntingSkill")
     val huntingSkill: Cat.HuntingSkill,
 
-    @field:com.fasterxml.jackson.annotation.JsonProperty("name")
-    override val name: kotlin.String,
-    
     @field:com.fasterxml.jackson.annotation.JsonProperty("petType")
-    override val petType: kotlin.String
-) : Pet(name = name, petType = petType)
+    override val petType: kotlin.String = "cat",
+
+) : Pet(petType = petType)
 {
     /**
     * The measured skill for hunting

samples/server/others/kotlin-server/polymorphism-allof-and-discriminator/src/main/kotlin/org/openapitools/server/models/Dog.kt

@@ -1,5 +1,5 @@
 /**
- * Polymorphism example with allOf and discriminator
+ * Basic polymorphism example with discriminator
  * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
  *
  * The version of the OpenAPI document: 1.0
@@ -11,24 +11,19 @@
 */
 package org.openapitools.server.models
 
-import org.openapitools.server.models.Pet
 
 /**
- * A representation of a dog
+ * A pet dog
+ * @param petType 
  * @param packSize the size of the pack the dog is from
  */
 data class Dog(
+    
+    @field:com.fasterxml.jackson.annotation.JsonProperty("petType")
+    override val petType: kotlin.String = "dog",
     /* the size of the pack the dog is from */
 
     @field:com.fasterxml.jackson.annotation.JsonProperty("packSize")
-    val packSize: kotlin.Int = 0,
-    
-    @field:com.fasterxml.jackson.annotation.JsonProperty("name")
-    override val name: kotlin.String,
-    
-    @field:com.fasterxml.jackson.annotation.JsonProperty("petType")
-    override val petType: kotlin.String
-) : Pet(name = name, petType = petType)
-{
-}
+    val packSize: kotlin.Int = 0
+) : Pet(petType = petType)
 

samples/server/others/kotlin-server/polymorphism-allof-and-discriminator/src/main/kotlin/org/openapitools/server/models/Pet.kt

@@ -1,5 +1,5 @@
 /**
- * Polymorphism example with allOf and discriminator
+ * Basic polymorphism example with discriminator
  * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
  *
  * The version of the OpenAPI document: 1.0
@@ -11,23 +11,20 @@
 */
 package org.openapitools.server.models
 
+import org.openapitools.server.models.Cat
+import org.openapitools.server.models.Dog
 
 /**
- * 
- * @param name 
+ * A pet
  * @param petType 
  */
 @com.fasterxml.jackson.annotation.JsonTypeInfo(use = com.fasterxml.jackson.annotation.JsonTypeInfo.Id.NAME, include = com.fasterxml.jackson.annotation.JsonTypeInfo.As.PROPERTY, property = "petType", visible = true)
 @com.fasterxml.jackson.annotation.JsonSubTypes(
-    com.fasterxml.jackson.annotation.JsonSubTypes.Type(value = Cat::class, name = "Cat"),
-    com.fasterxml.jackson.annotation.JsonSubTypes.Type(value = Dog::class, name = "Dog")
+    com.fasterxml.jackson.annotation.JsonSubTypes.Type(value = Cat::class, name = "cat"),
+    com.fasterxml.jackson.annotation.JsonSubTypes.Type(value = Dog::class, name = "dog")
 )
 sealed class Pet(
 
-    @field:com.fasterxml.jackson.annotation.JsonProperty("name")
-    open val name: kotlin.String
-,
-    
     @field:com.fasterxml.jackson.annotation.JsonProperty("petType")
     open val petType: kotlin.String