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