in slackbot/slackbot/cloudbuild.go [103:116]
func GetSlackbotBuildStep(build *cloudbuild.Build) (step *cloudbuild.BuildStep, err error){
for _, s := range build.Steps {
if isSlackbotStep(s) {
step = s
break
}
}
if step == nil {
err = errors.New("step not found: no slackbot related BuildStep found")
}
return step, err
}