{
    "description": "Maxkey type",
    "bson_type": "0x7F",
    "test_key": "a",
    "valid": [
        {
            "description": "Maxkey",
            "canonical_bson": "080000007F610000",
            "canonical_extjson": "{\"a\" : {\"$maxKey\" : 1}}"
        }
    ]
}
