code: def remove(*items)
        notify_will_change! if items.count > 0
        items.flatten.parse_objects.each do |item|
          collection.delete item
        end
        @collection
      end
docs: Removes Parse::Objects from the collection.
   @overload remove(parse_object)
    Remove a Parse::Object or Parse::Pointer to this collection.
    @param parse_object [Parse::Object,Parse::Pointer] the object to remove
   @overload remove(parse_objects)
    Remove an array of Parse::Objects or Parse::Pointers from this collection.
    @param parse_objects [Array<Parse::Object,Parse::Pointer>] the array of objects to remove.
   @return [Array<Parse::Object>] the collection