{
    "jsonSchema": {
        "type": "object",
        "properties": {
          "age": {
            "type": "integer",
            "title": "Age"
          },
          "items": {
            "type": "array",
            "items": {
              "type": "object",
              "anyOf": [
                {
                  "properties": {
                    "foo": {
                      "type": "string"
                    }
                  }
                },
                {
                  "properties": {
                    "bar": {
                      "type": "string"
                    }
                  }
                }
              ]
            }
          }
        },
        "anyOf": [
          {
            "title": "First method of identification",
            "properties": {
              "firstName": {
                "type": "string",
                "title": "First name",
                "default": "Chuck"
              },
              "lastName": {
                "type": "string",
                "title": "Last name"
              }
            }
          },
          {
            "title": "Second method of identification",
            "properties": {
              "idCode": {
                "type": "string",
                "title": "ID code"
              }
            }
          }
        ]
      },
      "uiSchema": {},
      "formData": {
        "firstName": "Chuck"
      }
}