def METHOD_NAME() -> None:
    """Start the bot."""
    # Create the Application and pass it your bot's token.
    application = Application.builder().token("TOKEN").build()
    # More info on what deep linking actually is (read this first if it's unclear to you):
    # https://core.telegram.org/bots/features#deep-linking
    # Register a deep-linking handler
    application.add_handler(
        CommandHandler("start", deep_linked_level_1, filters.Regex(CHECK_THIS_OUT))
    )
    # This one works with a textual link instead of an URL
    application.add_handler(CommandHandler("start", deep_linked_level_2, filters.Regex(SO_COOL)))
    # We can also pass on the deep-linking payload
    application.add_handler(
        CommandHandler("start", deep_linked_level_3, filters.Regex(USING_ENTITIES))
    )
    # Possible with inline keyboard buttons as well
    application.add_handler(
        CommandHandler("start", deep_linked_level_4, filters.Regex(USING_KEYBOARD))
    )
    # register callback handler for inline keyboard button
    application.add_handler(
        CallbackQueryHandler(deep_link_level_3_callback, pattern=KEYBOARD_CALLBACKDATA)
    )
    # Make sure the deep-linking handlers occur *before* the normal /start handler.
    application.add_handler(CommandHandler("start", start))
    # Run the bot until the user presses Ctrl-C
    application.run_polling(allowed_updates=Update.ALL_TYPES)