def METHOD_NAME(source_message: FoiMessage):
    text = source_message.plaintext
    foirequest = source_message.request
    credentials = FrontexCredentials.from_email(text)
    if credentials is None:
        return
    client = FrontexPadClient(credentials, captcha_net=get_captcha_net())
    case = client.load_pad_case()
    if case is None:
        return
    import_messages_from_case(foirequest, case)
    import_attachments_from_case(foirequest, case, client)
    source_message.tags.add(IMPORTED_TAG)