{
    "$schema": "https://json-schema.org/draft/2020-12/schema",
    "$id": "https://schema.twindev.org/w3c-activity-streams/ActivityStreamsTombstone",
    "title": "ActivityStreamsTombstone",
    "description": "A W3C Activity Streams Tombstone.\n\nA `Tombstone` represents an object that has been deleted. Implementations can\ninclude `formerType` and `deleted` to provide additional context.",
    "type": "object",
    "properties": {
        "type": {
            "anyOf": [
                {
                    "const": "Tombstone"
                },
                {
                    "type": "string"
                },
                {
                    "type": "array",
                    "items": {
                        "anyOf": [
                            {
                                "const": "Tombstone"
                            },
                            {
                                "type": "string"
                            }
                        ]
                    }
                }
            ],
            "description": "Tombstone type."
        },
        "deleted": {
            "type": "string",
            "description": "The date and time at which the object was deleted.",
            "format": "date-time"
        },
        "formerType": {
            "anyOf": [
                {
                    "type": "string"
                },
                {
                    "type": "array",
                    "items": {
                        "type": "string"
                    }
                }
            ],
            "description": "The former type of the deleted object."
        }
    },
    "required": [
        "type"
    ],
    "allOf": [
        {
            "$ref": "https://schema.twindev.org/w3c-activity-streams/ActivityStreamsObject"
        }
    ]
}