if err != nil {
			return nil, err
		}
	default:
		return nil, ErrDecrypt
	}

	associatedData, _ := req.AssociatedData.MarshalText()
	plaintext, err := aead.Open(nil, nonce, ciphertext, associatedData)
	if err != nil {
		return nil, ErrDecrypt
	}
	return plaintext, nil
}

// MAC generate hmac for the request

5. Ensure all tests pass: `mvn test`
6. Check license headers: `mvn license:format`
7. Commit changes: `git commit -m 'Add amazing feature'`
8. Push to branch: `git push origin feature/amazing-feature`
9. Open a Pull Request

### Code Style

- Use Eclipse formatter configuration (`src/config/eclipse/formatter/java.xml`)
- Follow existing naming conventions
- Add comprehensive JavaDoc for public APIs

예를 들어, [with를 사용해 파일을 읽을 수 있습니다](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files):

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

내부적으로 `open("./somefile.txt")` 는 "컨텍스트 관리자(Context Manager)"라고 불리는 객체를 생성합니다.

`with` 블록이 끝나면, 예외가 발생했더라도 파일을 닫도록 보장합니다.

	if s3Select.progressReader != nil {
		return s3Select.progressReader.Stats()
	}

	return -1, -1
}

// Open - opens S3 object by using callback for SQL selection query.
// Currently CSV, JSON and Apache Parquet formats are supported.
func (s3Select *S3Select) Open(rsc io.ReadSeekCloser) error {
	offset, length, err := s3Select.ScanRange.StartLen()
	if err != nil {
		return err
	}

              callable, timeoutDuration, timeoutUnit, interruptibleMethods.contains(method));
        };
    return newProxy(interfaceType, handler);
  }

  // TODO: replace with version in common.reflect if and when it's open-sourced
  private static <T> T newProxy(Class<T> interfaceType, InvocationHandler handler) {
    Object object =
        Proxy.newProxyInstance(

        // Act
        int available = stream.available();

        // Assert
        assertEquals(7, available, "Should return available bytes reported by server");

        // Interactions: ensure open, use tree, send IOCTL and close resources
        InOrder inOrder = inOrder(handle, fd, tree);
        inOrder.verify(handle, times(1)).ensureOpen();
        inOrder.verify(fd, times(1)).getTree();

Up to here, everything would work as normally.

But then, when you open the integrated docs UI (the frontend), it would expect to get the OpenAPI schema at `/openapi.json`, instead of `/api/v1/openapi.json`.

func getBinaryChecksum() string {
	mw := md5.New()
	binPath, err := os.Executable()
	if err != nil {
		logger.Error("Calculating checksum failed: %s", err)
		return "00000000000000000000000000000000"
	}
	b, err := os.Open(binPath)
	if err != nil {
		logger.Error("Calculating checksum failed: %s", err)
		return "00000000000000000000000000000000"
	}

	defer b.Close()
	io.Copy(mw, b)
	return hex.EncodeToString(mw.Sum(nil))

          defaults(JUnit) {
            vmParameters = [
              '-ea',
              '-Djava.locale.providers=SPI,COMPAT',
              "--illegal-access=deny",
              // TODO: only open these for mockito when it is modularized
              '--add-opens=java.base/java.security.cert=ALL-UNNAMED',
              '--add-opens=java.base/java.nio.channels=ALL-UNNAMED',

      }

      connectionPool.evictAll()
      assertEquals(0, connectionPool.connectionCount()) {
        "Still ${connectionPool.connectionCount()} connections open"
      }
    }
  }

  private fun ensureAllTaskQueuesIdle() {
    val entryTime = System.nanoTime()

    for (queue in TaskRunner.INSTANCE.activeQueues()) {