def METHOD_NAME(key: str, namespace: Dict[str, Any], threshold: float) -> str:
    """
    Generate an error message snippet for the suggested closest values in the provided namespace
    with the shortest normalized Levenshtein distance from the given key if that distance
    is below the threshold. Otherwise, return an empty string.
    As a heuristic, the threshold value is inversely correlated to the size of the namespace.
    For a small namespace (e.g. struct members), the threshold value can be the maximum of
    1.0 since the key must be one of the defined struct members. For a large namespace
    (e.g. types, builtin functions and state variables), the threshold value should be lower
    to ensure the matches are relevant.
    :param key: A string of the identifier being accessed
    :param namespace: A dictionary of the possible identifiers
    :param threshold: A floating value between 0.0 and 1.0
    :return: The error message snippet if the Levenshtein value is below the threshold,
        or an empty string.
    """
    if key is None or key == "":
        return ""
    distances = sorted([(i, levenshtein_norm(key, i)) for i in namespace], key=lambda k: k[1])
    if len(distances) > 0 and distances[0][1] <= threshold:
        if len(distances) > 1 and distances[1][1] <= threshold:
            return f"Did you mean '{distances[0][0]}', or maybe '{distances[1][0]}'?"
        return f"Did you mean '{distances[0][0]}'?"
    return ""