8. Notice that this *path operation function* uses regular `def` instead of `async def`.

    As always, in FastAPI you can combine `def` and `async def` as needed.

    If you need a refresher about when to use which, check out the section _"In a hurry?"_ in the docs about [`async` and `await`](../async.md#in-a-hurry){.internal-link target=_blank}.

    return {"name": fake_items_db[item_id]["name"], "item_id": item_id}


@router.put(
    "/{item_id}",
    tags=["custom"],
    responses={403: {"description": "Operation forbidden"}},
)
async def update_item(item_id: str):
    if item_id != "plumbus":
        raise HTTPException(
            status_code=403, detail="You can only update the item: plumbus"
        )

   * An object that holds the final result of an asynchronous {@link ClosingFuture} operation and
   * allows the user to close all the closeable objects that were captured during it for later
   * closing.
   *
   * <p>The asynchronous operation will have completed before this object is created.
   *
   * @param <V> the type of the value of a successful operation
   * @see ClosingFuture#finishToValueAndCloser(ValueAndCloserConsumer, Executor)

                        break;
                    default:
                        throw new SmbException("Invalid operation for " + service + " service");
                    }
                    break;
                default:
                    throw new SmbException("Invalid operation for " + service + " service" + request);
                }
            }
            request.tid = tid;

                    long threadStart = System.nanoTime();
                    for (int i = 0; i < operationsPerThread; i++) {
                        // Simulate the atomic byte tracking operation
                        long start = System.nanoTime();
                        mockBytesEncrypted.addAndGet(1024); // Simulate 1KB message
                        long end = System.nanoTime();

    public static class ShareEnumAll extends DcerpcMessage {

        @Override
        public int getOpnum() {
            return 0x0f;
        }

        /**
         * The return value of the operation.
         */
        public int retval;
        /**
         * The name of the server.
         */
        public String servername;
        /**
         * The information level to return.

         * Checks if the crawling thread has finished execution.
         *
         * @return true if the thread has completed its crawling operation
         */
        public boolean isFinished() {
            return finished;
        }

        /**
         * Stops the crawling operation gracefully.
         * If a data store is currently active, this method calls
         * its stop method to halt the crawling process.

Estos `examples` específicos de **OpenAPI** van en otra sección en la especificación de OpenAPI. Van en los **detalles para cada *path operation***, no dentro de cada JSON Schema.

Y Swagger UI ha soportado este campo particular de `examples` por un tiempo. Así que, puedes usarlo para **mostrar** diferentes **ejemplos en la interfaz de documentación**.

    private static final long serialVersionUID = 1L;

    /**
     * Error severity levels
     */
    public enum Severity {
        RECOVERABLE, // Can retry the operation
        TRANSIENT, // Temporary error, retry after delay
        PERMANENT, // Operation cannot succeed
        FATAL // Connection or session must be terminated
    }

    /**
     * Error categories
     */
    public enum Category {

    "tax": 3.2
}
```

## Recap { #recap }

You can add multiple body parameters to your *path operation function*, even though a request can only have a single body.

But **FastAPI** will handle it, give you the correct data in your function, and validate and document the correct schema in the *path operation*.

You can also declare singular values to be received as part of the body.