code: func (c *engineIPC) OverrideDestination(destination *seesaw.DestinationOverride) error {
  	override := &ipc.Override{Ctx: c.ctx, Destination: destination}
  	return c.client.Call("SeesawEngine.OverrideDestination", override, nil)
  }
docs: // OverrideDestination requests that the specified DestinationOverride be applied.