Derived models support improved

Author: Marat-Gumerov

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@asposecloud/asposeemailcloud",
-  "version": "19.11.40",
+  "version": "19.11.0",
   "description": "Aspose.Email Cloud Node.js SDK",
   "homepage": "https://products.aspose.cloud/email",
   "author": {
@@ -54,4 +54,4 @@
     "typescript": "^3.1.1",
     "cross-var": "^1.1.0"
   }
-}
+}

src/internal/object-serializer.ts

@@ -69,6 +69,13 @@ export class ObjectSerializer {
                 return data;
             }
 
+            //derived
+            var subTypeName = data.type;
+            if (subTypeName !== undefined && typeMap[subTypeName] !== undefined)
+            {
+                type = subTypeName;
+            }
+
             // get the map for the correct type.
             const attributeTypes = typeMap[type].getAttributeTypeMap();
             const instance = {};