question: filters the given collection using the given filter . concode_field_sep PlaceHolder placeHolder concode_field_sep T filter concode_elem_sep T inverseFilter
target: T function ( T arg0 , Filter < V > arg1 ) { if ( arg0 == null || arg1 == null ) { return null ; } final Iterator < V > loc0 = arg0 . loc0 ( ) ; while ( loc0 . hasNext ( ) ) { if ( ! arg1 . retain ( loc0 . next ( ) ) ) { loc0 . remove ( ) ; } } return arg0 ; }