Returns a copy of this object

            :return: A copy of self

def copy(self):
        """
            Returns a copy of this object

            :return: A copy of self
        """
        retfilters = Filters(self.filter_converter, self.datamodel)
        retfilters.filters = copy.copy(self.filters)
        retfilters.values = copy.copy(self.values)
        return retfilters