public boolean remove ( TYPE_1 VAR_1 ) { if ( VAR_1 == null ) throw new java.lang.NullPointerException ( ) ; return ( VAR_2 . remove ( VAR_1 . METHOD_1 ( ) ) ) != null ; } 

public boolean remove ( TYPE_1 VAR_1 ) { if ( VAR_1 == null ) throw new java.lang.NullPointerException ( ) ; return VAR_2 . remove ( VAR_1 . METHOD_1 ( ) , VAR_1 ) ; } 
