df6674c2ec
- inconsistent use of internal `TimeUnit`
- `setPeriod()` applied the unit, but `getPeriod()` did not
This test failed...
```java
@Test
public void testTriggerConsistency() {
final DynamicPeriodicTrigger trigger = new DynamicPeriodicTrigger(10, TimeUnit.SECONDS);
trigger.setPeriod(trigger.getPeriod());
assertThat(trigger.getPeriod(), equalTo(10_000));
}
```
Change the trigger to use `Duration` and deprecate the other methods.