{
  "schema": {
    "definitions": {
      "address": {
        "type": "object",
        "properties": {
          "street_address": { "type": "string" },
          "city": { "type": "string" },
          "state": { "type": "string" }
        },
        "required": [ "street_address", "city", "state" ]
      },
      "node": {
        "type": "object",
        "properties": {
          "name": { "type": "string" },
          "children": {
            "type": "array",
            "items": { "$ref": "#/definitions/node" }
          }
        }
      }
    },
    "type": "object",
    "properties": {
      "billing_address": {
        "title": "Billing address",
        "$ref": "#/definitions/address"
      },
      "shipping_address": {
        "title": "Shipping address",
        "$ref": "#/definitions/address"
      },
      "tree": {
        "title": "Recursive references",
        "$ref": "#/definitions/node"
      }
    }
  },
  "uiSchema": {
    "ui:order": [ "shipping_address", "billing_address", "tree" ]
  },
  "formData": {
    "billing_address": {
      "street_address": "21, Jump Street",
      "city": "Babel",
      "state": "Neverland"
    },
    "shipping_address": {
      "street_address": "221B, Baker Street",
      "city": "London",
      "state": "N/A"
    },
    "tree": {
      "name": "root",
      "children": [ { "name": "leaf" } ]
    }
  }
}