prow/plugins/plugins.go
func (a *Agent) CommentPruner() (*commentpruner.EventClient, error) {
	if a.commentPruner == nil {
		return nil, errors.New("comment pruner client never initialized")
	}
	return a.commentPruner, nil
}
func (a *Agent) CommentPruner() (*commentpruner.EventClient, error) {
	if a.commentPruner == nil {
		return nil, errors.New("comment pruner client never initialized")
	}
	return a.commentPruner, nil
}
// CommentPruner will return the commentpruner.EventClient attached to the agent or an error
// if one is not attached.