def get_resource_demographic_manager(self):
raise errors.Unimplemented()<EOL>
Gets the ``ResourceDemographicManager``.

        return: (osid.resource.demographic.ResourceDemographicManager) -
                a ``ResourceDemographicManager``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_resource_demographic()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_resource_demographic()`` is ``true``.*