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

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