context.options = parseCliOptions(context);
        } catch (Exception e) {
            context.parsingFailed = true;
            context.options = null;
            parserRequest.logger().error("Error parsing program arguments", e);
        }

        // system and user properties
        try {
            context.systemProperties = populateSystemProperties(context);
        } catch (Exception e) {

| *Required*    | *No*                                               |

### Policy

                    "Invalid query: " + queryContext.getQueryString(), e);
        }
    }

    /**
     * Gets the query parser instance for parsing search query strings.
     *
     * @return the configured query parser
     */
    protected QueryParser getQueryParser() {
        return ComponentUtil.getQueryParser();
    }

    /**

{* ../../docs_src/path_params/tutorial002.py hl[7] *}

ここでは、 `item_id` は `int` として宣言されています。

/// check | 確認

これにより、関数内でのエディターサポート (エラーチェックや補完など) が提供されます。

///

## データ<abbr title="別名: serialization, parsing, marshalling">変換</abbr>

この例を実行し、ブラウザで <a href="http://127.0.0.1:8000/items/3" class="external-link" target="_blank">http://127.0.0.1:8000/items/3</a> を開くと、次のレスポンスが表示されます:

```JSON
{"item_id":3}
```

 * reasonable and it will be fine.
 *
 * <ul>
 *   <li>If checking whether the <i>caller</i> has violated your method or constructor's contract
 *       (such as by passing an invalid argument), use the utilities of the {@link Preconditions}
 *       class instead.
 *   <li>If checking an <i>impossible</i> condition (which <i>cannot</i> happen unless your own

  /**
   * This method is called by {@link #stopAsync} when the service is still starting (i.e. {@link
   * #startAsync} has been called but {@link #notifyStarted} has not). Subclasses can override the
   * method to cancel pending work and then call {@link #notifyStopped} to stop the service.
   *
   * <p>This method should return promptly; prefer to do work on a different thread where it is

		return false
	}
}

func (m *muxClient) close() {
	if debugPrint {
		fmt.Println("closing outgoing mux", m.MuxID)
	}
	if !m.respMu.TryLock() {
		// Cancel before locking - will unblock any pending sends.
		if m.cancelFn != nil {
			m.cancelFn(context.Canceled)
		}
		// Wait for senders to release.
		m.respMu.Lock()
	}

	defer m.respMu.Unlock()
	m.closeLocked()
}

    return collection.stream();
  }

  /**
   * Returns a sequential {@link Stream} of the remaining contents of {@code iterator}. Do not use
   * {@code iterator} directly after passing it to this method.
   */
  public static <T extends @Nullable Object> Stream<T> stream(Iterator<T> iterator) {
    return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, 0), false);
  }

  /**

You can "star" FastAPI in GitHub (clicking the star button at the top right): <a href="https://github.com/fastapi/fastapi" class="external-link" target="_blank">https://github.com/fastapi/fastapi</a>. ⭐️

By adding a star, other users will be able to find it more easily and see that it has been already useful for others.

## Watch the GitHub repository for releases { #watch-the-github-repository-for-releases }

 * }
 *
 * <p>{@link NetworkBuilder#build()} returns an instance of {@link MutableNetwork}, which is a
 * subtype of {@code Network} that provides methods for adding and removing nodes and edges. If you
 * do not need to mutate a network (e.g. if you write a method than runs a read-only algorithm on
 * the network), you should use the non-mutating {@link Network} interface, or an {@link