code: func bodyAllowedForStatus(status int) bool {
  	switch {
  	case status >= 100 && status <= 199:
  		return false
  	case status == http.StatusNoContent:
  		return false
  	case status == http.StatusNotModified:
  		return false
  	}
  	return true
  }
docs: /************************************/
  /******** RESPONSE RENDERING ********/
  /************************************/
  // bodyAllowedForStatus is a copy of http.bodyAllowedForStatus non-exported function.