def METHOD_NAME(self):
    for proof_req in INDY_PROOF_REQ:
        assert (
            V20PresFormat.Format.INDY.get_attachment_data(
                formats=[
                    V20PresFormat(
                        attach_id="indy",
                        format_=V20PresFormat.Format.INDY,
                    )
                ],
                attachments=[
                    AttachDecorator.data_base64(mapping=proof_req, ident="indy")
                ],
            )
            == proof_req
        )
        assert (
            V20PresFormat.Format.INDY.get_attachment_data(
                formats=[
                    V20PresFormat(
                        attach_id="indy",
                        format_=V20PresFormat.Format.INDY,
                    )
                ],
                attachments=[AttachDecorator.data_base64(proof_req, ident="xxx")],
            )
            is None
        )
        assert (
            V20PresFormat.Format.DIF.get_attachment_data(
                formats=[
                    V20PresFormat(
                        attach_id="indy",
                        format_=V20PresFormat.Format.INDY,
                    )
                ],
                attachments=[AttachDecorator.data_base64(proof_req, ident="indy")],
            )
            is None
        )