def catchall_in_route(route: str) -> str:
    """Extract the catchall part from a route.

    Args:
        route: the route from which to extract

    Returns:
        str: the catchall part of the URI
    """
    match_ = constants.RouteRegex.CATCHALL.search(route)
    return match_.group() if match_ else ""
Extract the catchall part from a route.

    Args:
        route: the route from which to extract

    Returns:
        str: the catchall part of the URI
    
reflex/route.py