Singleton that manages [InputEventAction]. Manages all [InputEventAction] which can be created/modified from the project settings menu [b]Project > Project Settings > Input Map[/b] or in code with [method add_action] and [method action_add_event]. See [method Node._input]. $DOCS_URL/tutorials/inputs/inputevent.html#inputmap Returns an array of all actions in the [InputMap]. Clears all [InputEventAction] in the [InputMap] and load it anew from [ProjectSettings].