In JSON Response there is key "Value" but its response have multiple forms like String and Array with same key "Value".

So how to make Retrofit model class to maintain String and Array with same key "Value".

```
    {
    "RespCode":"SUCCESS",
    "RespText":"Transaction Details",
       "Data":{
              "Record":[
               {
                  "group_title":"Seller Information",
                  "group_values":[
                   {
                        "key":"Listing Agent",
                        "value":[
                            {
                               "key":"Agent First Name",
                               "value":"Myks"
                            },
                            {
                                "key":"Agent Last Name",
                                "value":"Joe"
                            },
                            {
                                "key":"Company",
                                "value":"bdfjdlfdf"
                            },
                            {
                                "key":"Phone",
                                "value":"712.336.4967"
                            },
                            {
                                "key":"Email",
                                "value":"abc@gmail.com"
                            }
                        ]
                    },
                    {
                        "key":"Cell Phone",
                        "value":"012.345.6789"
                    },
                    {
                        "key":"Email",
                        "value":"balt@gmail.com.com"
                    },
                    {
                        "key":"Preferred Contact Method",
                        "value":"Phone"
                    }
                ]
            },
   ]
  }
}

```