@Test
    @DisplayName("close() delegates to underlying iterator")
    void closeDelegates() throws Exception {
        // Arrange: no elements - no parent setup needed since no URLs are created
        when(delegate.hasNext()).thenReturn(false);
        NetServerFileEntryAdapterIterator itr = new NetServerFileEntryAdapterIterator(parent, delegate, null);

        // Act
        itr.close();

        // Assert

Ahora, para FastAPI, verá el tipo de retorno y se asegurará de que lo que devuelves incluya **solo** los campos que están declarados en el tipo.

FastAPI realiza varias cosas internamente con Pydantic para asegurarse de que esas mismas reglas de herencia de clases no se utilicen para el filtrado de datos devueltos, de lo contrario, podrías terminar devolviendo muchos más datos de los que esperabas.

	d, err := Open(dirPath)
	if err != nil {
		if osErrToFileErr(err) == errFileNotFound {
			return nil
		}
		return osErrToFileErr(err)
	}
	defer d.Close()

	maxEntries := 1000
	for {
		// Read up to max number of entries.
		fis, err := d.Readdir(maxEntries)
		if err != nil {
			if err == io.EOF {
				break
			}
			err = osErrToFileErr(err)

	globalServiceFreezeMu.Lock()
	// Close when we reach 0
	globalServiceFreezeCnt--
	if globalServiceFreezeCnt <= 0 {
		// Set to a nil channel.
		var _ch chan struct{}
		if val := globalServiceFreeze.Swap(_ch); val != nil {
			if ch, ok := val.(chan struct{}); ok && ch != nil {
				// Close previous non-nil channel.
				xioutil.SafeClose(ch)
			}
		}

        runner.close();
        runner.clean();
    }

    @Before
    public void setUp() {
        // Setup for each test
    }

    @Test
    public void testPrivateConstructor() throws Exception {
        // Test that SuggestUtil has a private constructor to prevent instantiation
        Constructor<SuggestUtil> constructor = SuggestUtil.class.getDeclaredConstructor();

     */
    SmbPipeResource getPipe(String url, int pipeType) throws CIFSException;

    /**
     * Close all connections and release resources associated with this context
     *
     * @return whether any connection was still in use
     * @throws CIFSException if an error occurs during cleanup
     */
    boolean close() throws CIFSException;

    /**
     * Get the configuration object for this context
     *

            log.warn("Error during witness client shutdown", e);
        }

        // Shutdown scheduler
        scheduler.shutdown();

        // Close RPC client
        if (rpcClient != null) {
            rpcClient.close();
        }
    }

    /**
     * Starts asynchronous notification monitoring for a registration.
     *
     * @param registration the witness registration
     */

    }
  }

  private static class FileByteSourceFactory extends FileFactory implements ByteSourceFactory {

    @Override
    public ByteSource createSource(byte[] bytes) throws IOException {
      checkNotNull(bytes);
      File file = createFile();
      OutputStream out = new FileOutputStream(file);
      try {
        out.write(bytes);
      } finally {
        out.close();
      }

  override fun sameHostAndPort(url: HttpUrl): Boolean = url.host == address.url.host && url.port == address.url.port

  override fun close() {
    factory.close()
  }

  inner class FakePlan(
    val id: Int,
  ) : RoutePlanner.Plan {
    var planningThrowable: Throwable? = null
    var canceled = false
    var connectState = ConnectState.READY
    val connection =

    }

    private String generateRecoveryHint() {
        switch (resourceType) {
        case FILE_HANDLE:
            return "Close unused file handles or increase the file handle limit";
        case CONNECTION:
            return "Close idle connections or increase the connection pool size";
        case MEMORY:
            return "Reduce buffer sizes or increase heap memory";
        case DISK_SPACE: