def supports_proxy_record_type(self, proxy_record_type=None):
Test for support of a proxy type.

        arg:    proxy_record_type (osid.type.Type): a proxy record type
        return: (boolean) - ``true`` if this service supports the given
                proxy record type, ``false`` otherwise
        raise:  NullArgument - ``proxy_record_type`` is ``null``
        *compliance: mandatory -- This method must be implemented.*