private void postGetGroupMembersError ( final GetGroupMembersCompletionListener completionListener , final String errorMessage ) { new Handler ( Looper . getMainLooper ( ) ) . post ( new Runnable ( ) { @ Override public void run ( ) { if ( null != completionListener ) { completionListener . onError ( errorMessage ) ; } } } ) ; }
A convenience method for posting errors to a GetGroupMembersCompletionListener