// When a parameter of a @Generates method cannot be created,
          // The type most likely is a collection.
          // Our distinct proxy doesn't work for collections.
          // So just refuse to generate.
          return null;
        }
        args.add(argValue);
      }
      return invokeGeneratorMethod(generate, args.toArray());
    }
    return defaultGenerate(rawType);
  }

   *         .put("one", 1)
   *         .putAll("several", 1, 2, 3)
   *         .putAll("many", 1, 2, 3, 4, 5)
   *         .build();
   * }</pre>
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build
   * multiple multimaps in series. Each multimap contains the key-value mappings in the previously
   * created multimaps.
   *
   * @since 2.0
   */

		}
		client.cancelFn(context.Canceled)
		c.outgoing.Delete(client.MuxID)
	}()
	return client.traceRoundtrip(ctx, c.trace, h, req)
}

// NewStream creates a new stream.
// Initial payload can be reused by the caller.
func (c *Connection) NewStream(ctx context.Context, h HandlerID, payload []byte) (st *Stream, err error) {
	if !h.valid() {
		return nil, ErrUnknownHandler
	}
	if c.State() != StateConnected {

}

// Close closer interface to close the underlying closer
func (w *DeadlineWriter) Close() error {
	err := w.WriteCloser.Close()
	w.err = err
	if err == nil {
		w.err = errors.New("we are closed") // Avoids any reuse on the Write() side.
	}
	return err
}

// LimitWriter implements io.WriteCloser.
//
// This is implemented such that we want to restrict
// an enscapsulated writer upto a certain length

   *         .put("one", 1)
   *         .putAll("several", 1, 2, 3)
   *         .putAll("many", 1, 2, 3, 4, 5)
   *         .build();
   * }</pre>
   *
   * <p>Builder instances can be reused; it is safe to call {@link #build} multiple times to build
   * multiple multimaps in series. Each multimap contains the key-value mappings in the previously
   * created multimaps.
   *
   * @since 2.0
   */

	return res
}

// metaCacheEntriesSorted contains metacache entries that are sorted.
type metaCacheEntriesSorted struct {
	o metaCacheEntries
	// list id is not serialized
	listID string
	// Reuse buffers
	reuse bool
	// Contain the last skipped object after an ILM expiry evaluation
	lastSkippedEntry string
}

// shallowClone will create a shallow clone of the array objects,

].btn-block {\n  width: 100%;\n}\n\n.fade {\n  transition: opacity 0.15s linear;\n}\n\n@media (prefers-reduced-motion: reduce) {\n  .fade {\n    transition: none;\n  }\n}\n\n.fade:not(.show) {\n  opacity: 0;\n}\n\n.collapse:not(.show) {\n  display: none;\n}\n\n.collapsing {\n  position: relative;\n  height: 0;\n  overflow: hidden;\n  transition: height 0.35s ease;\n}\n\n@media (prefers-reduced-motion: reduce) {\n  .collapsing {\n    transition: none;\n  }\n}\n\n.dropup,\n.dropright,\n.dropdown,\n.dropleft...

   * {@link #toString} on the {@link #entrySet}, yielding a result such as {@code [a x 3, c, d x 2,
   * e]}.
   */
  @Override
  String toString();

  // Refined Collection Methods

  /**
   * {@inheritDoc}
   *
   * <p>Elements that occur multiple times in the multiset will appear multiple times in this
   * iterator, though not necessarily sequentially.
   */

また、そのためのデフォルトの例外ハンドラも含まれています。

これをオーバーライドするには`RequestValidationError`をインポートして`@app.exception_handler(RequestValidationError)`と一緒に使用して例外ハンドラをデコレートします。

この例外ハンドラは`Requset`と例外を受け取ります。

```Python hl_lines="2 14 15 16"
{!../../docs_src/handling_errors/tutorial004.py!}
```

これで、`/items/foo`にアクセスすると、デフォルトのJSONエラーの代わりに以下が返されます:

```JSON
{
    "detail": [
        {

The `security_scopes` object (of class `SecurityScopes`) also provides a `scope_str` attribute with a single string, containing those scopes separated by spaces (we are going to use it).

We create an `HTTPException` that we can reuse (`raise`) later at several points.