## Execução de dependências com `yield` { #execution-of-dependencies-with-yield }

A sequência de execução é mais ou menos como esse diagrama. O tempo passa do topo para baixo. E cada coluna é uma das partes interagindo ou executando código.

```mermaid
sequenceDiagram

participant client as Cliente
participant handler as Manipulador de exceções

    if (timeoutEarlyExit) return cause
    if (!timeout.exit()) return cause

    val e = InterruptedIOException("timeout")
    if (cause != null) e.initCause(cause)
    return e
  }

  /**
   * Stops applying the timeout before the call is entirely complete. This is used for WebSockets
   * and duplex calls where the timeout only applies to the initial setup.
   */
  fun timeoutEarlyExit() {
    check(!timeoutEarlyExit)

       * which we don't support anyway.
       */
      return nextIndex >= 0;
    }

    /**
     * Checks whether nextIndex is valid; if so setting nextItem. Stops iterator when either hits
     * putIndex or sees null item.
     */
    private void checkNext() {
      if (nextIndex == putIndex) {
        nextIndex = -1;
        nextItem = null;
      } else {

        },
        "catalan_keywords": {
          "type":       "keyword_marker",

        },
        "catalan_keywords": {
          "type":       "keyword_marker",

    } finally {
      closer.close();
    }
  }

  /**
   * Reads lines of text from this source, processing each line as it is read using the given {@link
   * LineProcessor processor}. Stops when all lines have been processed or the processor returns
   * {@code false} and returns the result produced by the processor.
   *
   * <p>Like {@link BufferedReader#readLine()}, this method considers a line to be a sequence of

    } finally {
      closer.close();
    }
  }

  /**
   * Reads lines of text from this source, processing each line as it is read using the given {@link
   * LineProcessor processor}. Stops when all lines have been processed or the processor returns
   * {@code false} and returns the result produced by the processor.
   *
   * <p>Like {@link BufferedReader#readLine()}, this method considers a line to be a sequence of

    typedef tensorflow::protobuf::RepeatedPtrField<tensorflow::OpDef> OpDefs;
    const OpDefs& ops = op_list.op();
    bool found = std::find_if(ops.begin(), ops.end(),
                              [](const tensorflow::OpDef& op_def) {
                                return op_def.name() == "TestCApi";
                              }) != ops.end();
    EXPECT_TRUE(found);
    TF_DeleteBuffer(op_list_buffer);
  }
}

ここで、`/unicorns/yolo`をリクエストすると、*path operation*は`UnicornException`を`raise`します。

しかし、これは`unicorn_exception_handler`で処理されます。

そのため、HTTPステータスコードが`418`で、JSONの内容が以下のような明確なエラーを受け取ることになります:

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | 技術詳細

また、`from starlette.requests import Request`と`from starlette.responses import JSONResponse`を使用することもできます。

            destroyContainer();
        }

        if (exitCode != Constants.EXIT_OK) {
            System.exit(exitCode);
        }
    }

    /**
     * Destroys the DI container and stops the timeout manager.
     * This method ensures proper cleanup of resources when the crawler shuts down.
     * It's called both during normal shutdown and in error conditions.
     */