def is_attribute_multivalued(self, attribute):
        """
        Check if the attribute is allowed to have multiple instances.

        Args:
            attribute (string): The name of the attribute
                (e.g., 'State'). Required.
        """
        # TODO (peterhamilton) Handle multivalue swap between certificate types
        rule_set = self._attribute_rule_sets.get(attribute)
        return rule_set.multiple_instances_permitted
Check if the attribute is allowed to have multiple instances.

        Args:
            attribute (string): The name of the attribute
                (e.g., 'State'). Required.