Passing arguments to the app's main function

[clstaudt]

def main(page: Page):
    """Entry point of the app"""
    app = MyApp(page)
    app.build()


if __name__ == "__main__":
    flet.app(
        name="MyApp",
        target=main,
        assets_dir="assets",
    )

How can I pass custom arguments to the app at startup? For example demo_mode: bool that gets passed to the constructor of MyApp