opts.go
func MonitoredResource(resource *logging.MonitoredResource) Option {
	return func(sh *StackdriverHook) error {
		sh.resource = resource
		return nil
	}
}
func MonitoredResource(resource *logging.MonitoredResource) Option {
	return func(sh *StackdriverHook) error {
		sh.resource = resource
		return nil
	}
}
// MonitoredResource is an option that sets the monitored resource to send with
// each log entry.