Base class for keys events with modifiers. Contains keys events information with modifiers support like [code]SHIFT[/code] or [code]ALT[/code]. See [method Node._input]. https://docs.godotengine.org/en/3.1/tutorials/inputs/inputevent.html State of the Alt modifier. State of the Command modifier. State of the Ctrl modifier. State of the Meta modifier. State of the Shift modifier.