registerCommand
fun registerCommand(command: String, callback: () -> Unit, thisArg: ERROR CLASS: Symbol not found for JsAny?? = definedExternally): Disposable(source)
Registers a command that can be invoked via a keyboard shortcut, a menu item, an action, or directly.
Registering a command with an existing command identifier twice will cause an error.
Parameters
command
A unique identifier for the command.
callback
A command handler function.
thisArg
The this context used when invoking the handler function.