@abc.abstractmethod<EOL><INDENT>def get_location_spatial_session(self):<DEDENT>
return<EOL>
Gets the ``OsidSession`` associated with the location spatial service.

        :return: a ``LocationSpatialSession``
        :rtype: ``osid.mapping.LocationSpatialSession``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_location_spatial()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_location_spatial()`` is ``true``.*