PractitionerRole.notAvailable 
The practitioner is not available or performing this role during this period of time due to the provided reason.
= Must Support, = Is Modifier, = QiCore defined extension
| Field | Card. | Type | Description |
|---|---|---|---|
| description | 1..1 | String | The reason that can be presented to the user as to why this time is not available. |
| during | 0..1 | Interval<DateTime> | Service is not available (seasonally or for a public holiday) from this date. |