def get_format_conversion_session(self):
raise Unimplemented()<EOL>
Gets a text format conversion session.

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