async def METHOD_NAME(self):
    MODIFIED_DOCUMENT = {
        **TEST_LD_DOCUMENT_SIGNED_ED25519_2020,
        "unsigned_claim": "oops",
    }
    result = await verify(
        document=MODIFIED_DOCUMENT,
        suites=[Ed25519Signature2020(key_pair=self.verify_key_pair)],
        document_loader=custom_document_loader,
        purpose=AssertionProofPurpose(),
    )
    assert result
    assert not result.verified