{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "key": {
      "type": "string"
    },
    "title": {
      "type": "string"
    },
    "members": {
      "type": "integer",
      "minimum": 0,
      "maximum": 9007199254740991
    },
    "createdAt": {
      "type": "number"
    },
    "archivedAt": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ]
    }
  },
  "required": ["key", "title", "members", "createdAt", "archivedAt"],
  "additionalProperties": {},
  "title": "Group",
  "description": "An archived group keeps its members, which still count, but cannot change them."
}