How to use the normality.transliteration.ascii_text function in normality

given character. It is used to replace any non-text elements of the
      input string.
    """
    text = stringify(text, encoding_default=encoding_default,
                     encoding=encoding)
    if text is None:
        return

    if lowercase:
        # Yeah I made a Python package for this.
        text = text.lower()

    if ascii:
        # A stricter form of transliteration that leaves only ASCII
        # characters.
        text = ascii_text(text)
    elif latinize:
        # Perform unicode-based transliteration, e.g. of cyricllic
        # or CJK scripts into latin.
        text = latinize_text(text)

    if text is None:
        return

    # Perform unicode category-based character replacement. This is
    # used to filter out whole classes of characters, such as symbols,
    # punctuation, or whitespace-like characters.
    text = category_replace(text, replace_categories)

    if collapse:
        # Remove consecutive whitespace.
        text = collapse_spaces(text)

def _safe_name(file_name, sep):
    """Convert the file name to ASCII and normalize the string."""
    file_name = stringify(file_name)
    if file_name is None:
        return
    file_name = ascii_text(file_name)
    file_name = category_replace(file_name, UNICODE_CATEGORIES)
    file_name = collapse_spaces(file_name)
    if file_name is None or not len(file_name):
        return
    return file_name.replace(WS, sep)