* @throws UnsupportedOperationException always
   */
  @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public @Nullable B put(TypeToken<? extends @NonNull B> key, @ParametricNullness B value) {
    throw new UnsupportedOperationException("Please use putInstance() instead.");
  }

  /**
   * Not supported. Use {@link #putInstance} instead.
   *

  MapIteratorCache(Map<K, V> backingMap) {
    this.backingMap = checkNotNull(backingMap);
  }

  @CanIgnoreReturnValue
  final @Nullable V put(K key, V value) {
    checkNotNull(key);
    checkNotNull(value);
    clearCache();
    return backingMap.put(key, value);
  }

  @CanIgnoreReturnValue
  final @Nullable V remove(Object key) {
    checkNotNull(key);
    clearCache();

  }

  private static void add(
      Map<Class<?>, Class<?>> forward,
      Map<Class<?>, Class<?>> backward,
      Class<?> key,
      Class<?> value) {
    forward.put(key, value);
    backward.put(value, key);
  }

  /**
   * Returns an immutable set of all nine primitive types (including {@code void}). Note that a

  @Override
  public @Nullable E pollLast(long timeout, TimeUnit unit) throws InterruptedException {
    return delegate().pollLast(timeout, unit);
  }

  @Override
  public void put(E e) throws InterruptedException {
    delegate().put(e);
  }

  @Override
  public boolean offer(E e, long timeout, TimeUnit unit) throws InterruptedException {
    return delegate().offer(e, timeout, unit);
  }

  @Override

# Request Parameters

Here's the reference information for the request parameters.

These are the special functions that you can put in *path operation function* parameters or dependency functions with `Annotated` to get data from the request.

It includes:

* `Query()`
* `Path()`
* `Body()`
* `Cookie()`
* `Header()`
* `Form()`
* `File()`

You can import them all directly from `fastapi`:

```python

    return (entry == ABSENT) ? null : keys[entry];
  }

  @Override
  @CanIgnoreReturnValue
  public @Nullable V put(@ParametricNullness K key, @ParametricNullness V value) {
    return put(key, value, false);
  }

  @Nullable V put(@ParametricNullness K key, @ParametricNullness V value, boolean force) {
    int keyHash = Hashing.smearedHash(key);
    int entryForKey = findEntryByKey(key, keyHash);

				Resource: SlashSeparator + bucketName + SlashSeparator,
				Code:     "InvalidAccessKeyId",
				Message:  "The Access Key Id you provided does not exist in our records.",
			},
			shouldPass: false,
		},
		// PUT empty credentials
		{
			method:             http.MethodPut,
			bucketName:         bucketName,
			accessKey:          "",
			secretKey:          "",
			expectedRespStatus: http.StatusForbidden,

    * Swagger UI.
    * ReDoc.

---

Tornando al precedente esempio, **FastAPI**:

* Validerà che esiste un `item_id` nel percorso delle richieste `GET` e `PUT`.
* Validerà che `item_id` sia di tipo `int` per le richieste `GET` e `PUT`.
    * Se non lo è, il client vedrà un errore chiaro e utile.

For example, let's define a variable to be a `list` of `str`.

//// tab | Python 3.9+

Declare the variable, with the same colon (`:`) syntax.

As the type, put `list`.

As the list is a type that contains some internal types, you put them in square brackets:

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial006_py39.py!}
```

////

//// tab | Python 3.8+

    * Swagger UI.
    * ReDoc.

---

Um auf das vorherige Codebeispiel zurückzukommen, **FastAPI** wird:

* Überprüfen, dass es eine `item_id` im Pfad für `GET`- und `PUT`-Anfragen gibt.
* Überprüfen, ob die `item_id` vom Typ `int` für `GET`- und `PUT`-Anfragen ist.
    * Falls nicht, wird dem Client ein nützlicher, eindeutiger Fehler angezeigt.