code: func (b *Builder) Arguments() []string {
  	var envs []string
  	for key, val := range b.Args {
  		if _, ok := b.AllowedArgs[key]; ok {
  			envs = append(envs, fmt.Sprintf("%s=%s", key, val))
  		}
  	}
  	return envs
  }
docs: // Arguments returns the currently active arguments.