def supports_priority_type(self, priority_type=None):
if priority_type is None:<EOL><INDENT>raise NullArgument()<EOL><DEDENT>return False<EOL>
Tests if the priority type is supported.

        arg:    priority_type (osid.type.Type): a ``Type`` indicating a
                priority type
        return: (boolean) - ``true`` if the given ``Type`` is supported,
                ``false`` otherwise
        raise:  NullArgument - ``priority_type`` is ``null``
        *compliance: mandatory -- This method must be implemented.*