RetrofitClient.getInstance(context)
              .createBaseApi()
              .get("you path url"
                    ,maps, maps, new Subscriber<IpResult>());

RetrofitClient.getInstance(context)
             .createBaseApi(
              ).post("you path url"
                    ,maps, maps, new Subscriber<IpResult>());

     RetrofitClient.getInstance(MainActivity.this)
         .createBaseApi()
         .json("url", jsonBody, new BaseSubscriber<T>(context) {

  }

    RequestBody requestFile =
                    RequestBody.create(MediaType.parse("image/jpg"), new File(mPath));
        
    RetrofitClient.getInstance(MainActivity.this)
              .createBaseApi()
               .upload(url, requestFile, new Subscriber<ResponseBody>);

  RetrofitClient.getInstance(MainActivity.this)
                 .createBaseApi()

    //create  you APiService    
     MyApiService service = RetrofitClient.getInstance(MainActivity.this).create(MyApiService.class);    
   // execute and add observable    
   RetrofitClient.getInstance(MainActivity.this).execute(            
                              service.getData("21.22.11.33"), new Subscriber<IpResult>() {                                     

                   
               });}