public < TYPE_1 extends TYPE_2 > void METHOD_1 ( TYPE_1 VAR_1 ) { VAR_2 . METHOD_1 ( VAR_1 ) ; METHOD_2 ( this ) ; } 

public < TYPE_1 extends TYPE_2 > void METHOD_1 ( TYPE_1 VAR_1 ) { if ( VAR_1 != null ) { VAR_2 . METHOD_1 ( VAR_1 ) ; METHOD_2 ( this ) ; } } 
