def get_family_lookup_session(self, proxy=None, *args, **kwargs):
if not self.supports_family_lookup():<EOL><INDENT>raise Unimplemented()<EOL><DEDENT>try:<EOL><INDENT>from . import sessions<EOL><DEDENT>except ImportError:<EOL><INDENT>raise OperationFailed()<EOL><DEDENT>proxy = self._convert_proxy(proxy)<EOL>try:<EOL><INDENT>session = sessions.FamilyLookupSession(proxy=proxy, runtime=self._runtime, **kwargs)<EOL><DEDENT>except AttributeError:<EOL><INDENT>raise OperationFailed()<EOL><DEDENT>return session<EOL>
Gets the ``OsidSession`` associated with the family lookup service.

        arg:    proxy (osid.proxy.Proxy): a proxy
        return: (osid.relationship.FamilyLookupSession) - a
                ``FamilyLookupSession``
        raise:  NullArgument - ``proxy`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_family_lookup()`` is
                ``false``
        *compliance: optional -- This method must be implemented if ``supports_family_lookup()`` is ``true``.*