Converts a region name, UTC, or a fixed offset to ZoneId
All 3 scenarios hold
Region zones carry daylight-saving rules; UTC and plain offsets are fixed.
expected outcome
broken scenario
| Scenario | Input value | Parameter type? | ZoneId fixed offset? |
|---|---|---|---|
| Region zone | Europe/Berlin | java.time.ZoneId | false |
| UTC | UTC | java.time.ZoneId | true |
| Plain offset | +02:00 | java.time.ZoneId | true |