result.eventSpyDispatcher = shellContext.eventSpyDispatcher;
            };
        }

        @Override
        public void close() throws Exception {
            shellMavenInvoker.close();
            shellEncryptInvoker.close();
            shellUpgradeInvoker.close();
        }

        @Override
        public List<String> commandInfo(String command) {
            return List.of();
        }

`TryRead` and `TryWrite` are still available for non-blocking reads and writes.

To signify the end of the stream, close the ring buffer from the writer side with `rb.CloseWriter()`

Either side can use `rb.CloseWithError(err error)` to signal an error and close the ring buffer. 
Any reads or writes will return the error on next call.

    # Manually add the screenshot
    page.screenshot(path="docs/en/docs/img/tutorial/header-param-models/image01.png")

    # ---------------------
    context.close()
    browser.close()


process = subprocess.Popen(
    ["fastapi", "run", "docs_src/header_param_models/tutorial001.py"]
)
try:
    for _ in range(3):
        try:

    # Manually add the screenshot
    page.screenshot(path="docs/en/docs/img/tutorial/request-form-models/image01.png")

    # ---------------------
    context.close()
    browser.close()


process = subprocess.Popen(
    ["fastapi", "run", "docs_src/request_form_models/tutorial001.py"]
)
try:
    for _ in range(3):
        try:

  fun shutdown() {
    delegate.close()
  }

  @Synchronized override fun after() {
    try {
      shutdown()
    } catch (e: IOException) {
      logger.log(Level.WARNING, "MockWebServer shutdown failed", e)
    }
  }

  override fun toString(): String = delegate.toString()

  @Throws(IOException::class)
  override fun close() = delegate.close()

  companion object {

     */
    Metadata read(File input, Map<String, ?> options) throws IOException, MetadataParseException;

    /**
     * Reads the metadata from the specified character reader. The reader will be automatically closed before the method
     * returns.
     *
     * @param input The reader to deserialize the metadata from, must not be {@code null}.

     */
    Settings read(File input, Map<String, ?> options) throws IOException, SettingsParseException;

    /**
     * Reads the settings from the specified character reader. The reader will be automatically closed before the method
     * returns.
     *
     * @param input The reader to deserialize the settings from, must not be {@code null}.

     */
    PersistedToolchains read(File input, Map<String, ?> options) throws IOException, ToolchainsParseException;

    /**
     * Reads the toolchains from the specified character reader. The reader will be automatically closed before the
     * method returns.
     *
     * @param input The reader to deserialize the toolchains from, must not be {@code null}.

              throw new IllegalStateException("More than one source open");
            }
            return new FilterInputStream(source.openStream()) {
              @Override
              public void close() throws IOException {
                super.close();
                counter[0]--;
              }
            };
          }
        };
    byte[] result = ByteSource.concat(checker, checker, checker).read();

			if err != nil {
				errs[idx] = err
				return
			}

			reader := NewPutObjReader(hr)
			defer func() {
				if err := reader.Close(); err != nil {
					errs[idx] = err
				}
				if err := hr.Close(); err != nil {
					errs[idx] = err
				}
			}()

			userDefined := make(map[string]string, len(req.UserMetadata))
			maps.Copy(userDefined, req.UserMetadata)