def METHOD_NAME(member, manual_map, existing_bindings):
    match = re.match(MATCHER_EXPRESSION, member)
    new_member = None
    mapping_type = None
    if match:
        new_member = FORMAT_MATCHER(match)
        mapping_type = "Dynamic"
    strip_user = member.replace("user:", "")
    if strip_user in manual_map:
        new_member = "user:{email}".format(email=manual_map[strip_user])
        mapping_type = "Manual"
    if new_member in existing_bindings:
        return None
    if new_member and mapping_type:
        return [new_member, mapping_type]
    return None