def METHOD_NAME(req):
    docmeta_1 = models.DocumentMeta(
        _claimant="http://example.org/",
        _claimant_normalized="http://example.org",
        type="title",
        value=["Test Title"],
    )
    docmeta_2 = models.DocumentMeta(
        _claimant="http://example.net/",
        _claimant_normalized="http://example.net",
        type="title",
        value=["Test Title"],
    )
    req.db.add(models.Document(meta=[docmeta_1, docmeta_2]))
    req.db.flush()
    normalize_uris.normalize_document_meta(req)
    assert docmeta_1.claimant_normalized == "httpx://example.org"
    assert docmeta_2.claimant_normalized == "httpx://example.net"