json_schema: {
    "properties": {
      "customer": {
        "properties": {
          "address": {
            "description": "The address of the customer",
            "type": "string"
          },
          "name": {
            "description": "The name of the customer",
            "type": "string"
          }
        },
        "required": [
          "name",
          "address"
        ],
        "type": "object"
      },
      "items": {
        "items": {
          "properties": {
            "name": {
              "description": "The name of the item",
              "type": "string"
            },
            "price": {
              "description": "The price of the item",
              "type": "number"
            },
            "quantity": {
              "description": "The quantity of the item",
              "type": "integer"
            }
          },
          "required": [
            "name",
            "price",
            "quantity"
          ],
          "type": "object"
        },
        "type": "array"
      }
    },
    "required": [
      "items",
      "customer"
    ],
    "type": "object"
  }