def get_html_table_headers(**content):
    """
    Return the keys of the first element in the user_list dict.

    We don't care if the dict is unordered b/c the expectation is
    that each element of the dict will be structured the same
    """
    user_list = content["users"]
    days_since_pwdlastset = content["days_since_pwdlastset"]
    try:
        return user_list[days_since_pwdlastset][0].keys()
    except IndexError:
        # return the empty list of there are no accounts to be disabled
        return []