Challenge: Pizza Mutation

Problem statement

• Write a GraphQL mutation to update a pizza.

• The mutation must have an operation named UpdatePizza.

• The mutation must have id, pizza, and toppings from updatePizza. Don’t forget to include id and topping for toppings.

• The mutation must have id, pizza, and toppings as arguments.

• The mutation must have id as a required variable, and pizza and toppings as optional variables.

Expected output

The query should have an output like the JSON below.

{
  "data": {
    "updatePizza": {
      "id": 1,
      "pizza": "my new pizza",
      "toppings": [
        {
          "id": 1,
          "topping": "Cheesy"
        }
      ]
    }
  }
}