def METHOD_NAME(items: Iterable[str]):
    """Returns list in string format separated with "and" and an oxford comma: "a, b, and c"""
    items = list(map(str, items))
    if len(items) == 0:
        return ""
    elif len(items) == 1:
        return items[0]
    elif len(items) == 2:
        return items[0] + " and " + items[1]
    return ", ".join(items[:-1]) + ", and " + items[-1]