@utilities.arguments_not_none<EOL><INDENT>def has_children(self, id_):<DEDENT>
if self.get_children(id_).available() == <NUM_LIT:0>:<EOL><INDENT>return False<EOL><DEDENT>return True<EOL>
Tests if this ``Id`` has any children.

        arg:    id (osid.id.Id): the ``Id`` to query
        return: (boolean) - ``true`` if this ``Id`` has children,
                ``false`` otherwise
        raise:  NotFound - ``id`` is not found
        raise:  NullArgument - ``id`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*