A shortcut for binding input. A shortcut for binding input. Shortcuts are commonly used for interacting with a [Control] element from a [InputEvent]. Returns the Shortcut's [InputEvent] as a [String]. Returns [code]true[/code] if the Shortcut's [InputEvent] equals [code]event[/code]. If [code]true[/code] this Shortcut is valid. The Shortcut's [InputEvent]. Generally the [InputEvent] is a keyboard key, though it can be any [InputEvent].