code: func (*Trigger) XXX_OneofWrappers() []interface{} {
  	return []interface{}{
  		(*Trigger_Cron)(nil),
  		(*Trigger_Webui)(nil),
  		(*Trigger_Noop)(nil),
  		(*Trigger_Gitiles)(nil),
  		(*Trigger_Buildbucket)(nil),
  	}
  }
docs: // XXX_OneofWrappers is for the internal use of the proto package.