def instance_update_at_top(self, ctxt, instance):
        self.msg_runner.instance_update_at_top(ctxt, instance)
Retrieve Capabilities from the server and return them.
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/cells/manager.py/CellsManager.instance_update_at_top--crossover with--dataset/ETHPy150Open reviewboard/rbtools/rbtools/commands/__init__.py/Command.get_capabilities