def get_objective_lookup_session(self):
if not self.supports_objective_lookup():<EOL><INDENT>raise Unimplemented()<EOL><DEDENT>try:<EOL><INDENT>from . import sessions<EOL><DEDENT>except ImportError:<EOL><INDENT>raise  <EOL><DEDENT>try:<EOL><INDENT>session = sessions.ObjectiveLookupSession(runtime=self._runtime)<EOL><DEDENT>except AttributeError:<EOL><INDENT>raise  <EOL><DEDENT>return session<EOL>
Gets the OsidSession associated with the objective lookup
        service.

        return: (osid.learning.ObjectiveLookupSession) - an
                ObjectiveLookupSession
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - supports_objective_lookup() is false
        compliance: optional - This method must be implemented if
                    supports_objective_lookup() is true.