{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://example.com/issue-456.json",
  "title": "OneOf validates first child only",
  "description": "Test description",
  "type": "object",
  "properties": {
    "id": "string",
    "details": {
      "oneOf": [
        {
          "type": "object",
          "properties": {
            "name": {
              "type": "string"
            },
            "__typename": {
              "const": "T2"
            }
          },
          "required": [
            "name",
            "__typename"
          ]
        },
        {
          "type": "object",
          "properties": {
            "description": {
              "type": "string"
            },
            "__typename": {
              "const": "T3"
            }
          },
          "required": [
            "description",
            "__typename"
          ]
        }
      ]
    }
  }
}