The default unit is milliseconds and can be overridden using `@DurationUnit` as illustrated in the sample above.
TIP: If you are upgrading from a previous version that is simply using `Long` to express the duration, make sure to define the unit (using `@DurationUnit`) if it isn't milliseconds alongside the switch to `Duration`.
TIP: If you are upgrading a `Long` property, make sure to define the unit (using `@DurationUnit`) if it isn't milliseconds.
Doing so gives a transparent upgrade path while supporting a much richer format.
