List of generic items which can dispatch events.
The number of items in the list.
Add the given listener for the given event type(s).
The type of the event.
The callback which is executed when the event occurs.
Returns the object representing the nth item in the list.
The index of the item to retrieve.
Remove the given listener for the given event type(s).
The callback which will be removed.
List of generic items which can dispatch events.