An interface that is passed into @minecraft/Server.PlayerSwingStartAfterEvent.subscribe that
filters out which events are passed to the provided
callback.
The held item option that the callback should be called for.
If undefined, the callback will be called whether or not the
player is holding an item in their hand.
An interface that is passed into @minecraft/Server.PlayerSwingStartAfterEvent.subscribe that filters out which events are passed to the provided callback.