json to protobuf message title `undefined`

[wulei]

json Schema

{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "title": "Example Schema",
  "type": "object",
  "properties": {
    "firstName": {
      "type": "string"
    },
    "lastName": {
      "type": "string"
    },
    "age": {
      "description": "Age in years",
      "type": "integer",
      "minimum": 0
    },
    "height": {
      "type": ["number", "null"]
    },
    "favoriteFoods": {
      "type": "array",
      "minItems": 0,
      "maxItems": 2,
      "items": {
        "type": "string"
      }
    },
    "likesDogs": {
      "type": "boolean"
    }
  },
  "required": ["firstName", "lastName"]
}

transform protobuf

syntax = "proto2";

message undefined {
  required string firstName = 1;
  required string lastName = 2;
  optional int32 age = 3;
  optional number,null height = 4;
  repeated string favoriteFoods = 5;
  optional bool likesDogs = 6;
}

[stale]

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