{
  "description": "[layer:extent] the layer extent field is encoded as a string instead of a uint32",
  "specification_reference": "https://github.com/mapbox/vector-tile-spec/blob/master/2.1/vector_tile.proto#L70",
  "validity": {
    "v1": false,
    "v2": false,
    "error": "fatal"
  },
  "proto": [
    "2.1",
    "optional uint32 extent",
    "optional string extent"
  ]
}