code: func (d *Downtime) GetCanceledOk() (int, bool) {
  	if d == nil || d.Canceled == nil {
  		return 0, false
  	}
  	return *d.Canceled, true
  }
docs: // GetCanceledOk returns a tuple with the Canceled field if it's non-nil, zero value otherwise
  // and a boolean to check if the value has been set.