{
  "type": "object",
  "defaultProperties": [
    "name",
    "type",
    "url"
  ],
  "properties": {
    "fileExtension": {
      "type": "string",
      "title": "File extension",
      "description": "The file extension used to retrieve Open Street Map data"
    },
    "maximumLevel": {
      "type": "string",
      "title": "Maximum level",
      "description": "The maximum tile level to retrieve from Open Street Map data"
    }
  },
  "allOf": [
    {
      "$ref": "CatalogItem.json"
    },
    {
      "$ref": "ImageryLayerCatalogItem.json"
    },
    {
      "$ref": "CatalogMember.json"
    }
  ]
}