code: func AddProjectInfo(build *ui.MiloBuildLegacy, tags strpair.Map) {
  	if proj := tags.Get("luci_project"); proj != "" {
  		if build.Trigger == nil {
  			build.Trigger = &ui.Trigger{}
  		}
  		build.Trigger.Project = proj
  	}
  }
docs: // addProjectInfo adds the luci_project swarming tag to the build.