@classmethod
def start(cls):
    """Starts the watchdog and hooks function for various events."""
    if cls.running is False:
        cls.running = True
        cls.event_handler.on_deleted = cls.on_file_system_event
        cls.event_handler.on_moved = cls.on_file_system_event
        cls.event_handler.on_created = cls.on_file_system_event
        cls.event_handler.on_modified = cls.on_file_system_event
        cls.observer.start()
