default Filterable<T> removeAll(final Stream<? extends T> stream){
  final Set<T> set=stream.collect(Collectors.toSet());
  return filterNot(null);
}

default Filterable < T > removeAll ( final Stream < ? extends T > stream ) { final Set < T > set = stream . collect ( Collectors . toSet ( ) ) ; return filterNot ( null ) ; }
remove all elements in the supplied stream from this filterable
