URL stable until (property)

{
    "$id": "https://schemas.optimade.org/defs/v1.2/properties/optimade/files/url_stable_until",
    "$schema": "https://schemas.optimade.org/meta/v1.2/optimade/property_definition.json",
    "title": "URL stable until",
    "x-optimade-type": "timestamp",
    "x-optimade-definition": {
        "label": "url_stable_until_optimade_files",
        "kind": "property",
        "version": "1.2.0",
        "format": "1.2",
        "name": "url_stable_until"
    },
    "type": [
        "string",
        "null"
    ],
    "description": "Point in time until which the URL in `url` is guaranteed to stay stable.\n\n**Requirements/Conventions:**\n\n- `null` means that there is no stability guarantee for the URL in `url`.\n  Indefinite support could be communicated by providing a date sufficiently far in the future, for example, 9999-12-31.",
    "examples": [
        "2052-04-05T14:30:20Z"
    ],
    "x-optimade-unit": "inapplicable",
    "format": "date-time"
}