performDefaultImplementation()
Overridden by subclasses to provide a default implementation for the command represented by the receiver.
Declaration
func performDefaultImplementation() -> Any?Discussion
Do not invoke this method directly. execute() invokes this method when the command being executed is not supported by the class of the objects receiving the command. The default implementation returns nil.
You need to create a subclass of NSScriptCommand only if you need to provide a default implementation of a command.