// makeWatcherAPICaller creates a watcherAPICall function for a given facade name
// and watcherId.
func makeWatcherAPICaller(caller base.APICaller, facadeName, watcherId string) watcherAPICall {
bestVersion := caller.BestFacadeVersion(facadeName)
return func(request string, result interface{}) error {
return caller.APICall(facadeName, bestVersion,
watcherId, request, nil, &result)
}
}
