public void METHOD_1 ( TYPE_1 VAR_1 ) { if ( ( ( VAR_2 ) == null ) || ( VAR_2 . contains ( VAR_1 ) ) ) return ; else METHOD_2 ( VAR_1 ) ; } 

public void METHOD_1 ( TYPE_1 VAR_1 ) { if ( ( ( VAR_2 ) != null ) && ( VAR_2 . contains ( VAR_1 ) ) ) return ; else METHOD_2 ( VAR_1 ) ; } 
