[cpp-restsdk] store Object as a shared pointer (#21349)

* [cpp-restsdk] store Object as a shared pointer

* [cpp-restsdk] add test for object property

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

@@ -387,6 +387,8 @@ public class CppRestSdkClientCodegen extends AbstractCppCodegen {
                 || ModelUtils.isFileSchema(p) || ModelUtils.isUUIDSchema(p)
                 || languageSpecificPrimitives.contains(openAPIType)) {
             return toModelName(openAPIType);
+        } else if (ModelUtils.isObjectSchema(p)) {
+            return "std::shared_ptr<Object>";
         } else if(typeMapping.containsKey(super.getSchemaType(p))) {
             return openAPIType;
         }

modules/openapi-generator/src/test/resources/3_0/cpp-restsdk/petstore.yaml

@@ -798,6 +798,8 @@ components:
             - available
             - pending
             - sold
+        metadata:
+          type: object
       xml:
         name: Pet
     Color: