protected void METHOD_1 ( java.util.Set < TYPE_1 > set ) { if ( ! ( set . contains ( this ) ) ) { set . add ( this ) ; VAR_1 . METHOD_1 ( set ) ; } } 

protected void METHOD_1 ( java.util.Set < TYPE_1 > set ) { if ( ! ( set . contains ( this ) ) ) { set . add ( this ) ; if ( ( VAR_1 ) != null ) VAR_1 . METHOD_1 ( set ) ; } } 
