[
    {
        "description": "validation of duration strings",
        "schema": {
            "$schema": "https://json-schema.org/draft/2020-12/schema",
            "format": "duration"
        },
        "tests": [
            {
                "description": "more than one T",
                "data": "PT1MT1S",
                "valid": false
            }
        ]
    }
]