question: private void closeWall ( String wallId ) { RetroCallback retroCallback ; retroCallback = new RetroCallback ( this ) ; retroCallback . setRequestId ( HttpConstants . ApiResponseCodes . CLOSE_WALL ) ; Bundle args = new Bundle ( ) ; args . putString ( AppConstants . Keys . WALL_ID , wallId ) ; retroCallback . setExtras ( args ) ; retroCallbackList . add ( retroCallback ) ; CloseWallRequestModel closeWallRequestModel = new CloseWallRequestModel ( ) ; closeWallRequestModel . setIs_solved ( "1" ) ; mYeloApi . closeWall ( wallId , closeWallRequestModel , retroCallback ) ; }
target:  api call for closing the wall