public boolean contains ( java.lang.Object VAR_1 ) { <BUG> if ( ( VAR_2 ) == null ) return true ;</BUG> return VAR_2 . contains ( TYPE_1 . METHOD_1 ( VAR_1 ) ) ; }
public boolean contains ( java.lang.Object VAR_1 ) { if ( ( VAR_2 ) == null ) return false ; return VAR_2 . contains ( TYPE_1 . METHOD_1 ( VAR_1 ) ) ; } 
