public void METHOD_1 ( TYPE_1 buffer ) { VAR_1 . METHOD_2 ( ) ; VAR_2 . METHOD_1 ( buffer ) ; } 

public void METHOD_1 ( TYPE_1 buffer ) { VAR_1 . METHOD_2 ( ) ; if ( VAR_2 != null ) { VAR_2 . METHOD_1 ( buffer ) ; } } 
