{
  "$name": "ApExpire",
  "$description": "Model with expiration",
  "$inherits": [],
  "$attributes": {
    "approvedAt": {
      "$comment": "Date of approved",
      "$type": "DATE",
      "$nullable": true
    },
    "approved": {
      "$comment": "Approved or not",
      "$type": "BOOLEAN",
      "$dynamic": true,
      "$readonly": true,
      "$get": "!!this.getDataValue('approvedAt')"
    }
  },
  "$indices": {}
}