* @param level The logging level, never {@code null}.
     * @param message The logging message, never {@code null}.
     * @param error The error, if applicable.
     */
    record Entry(@Nonnull Level level, @Nonnull String message, @Nullable Throwable error) {}

    /**
     * If this is an accumulating log, it will "drain" this instance. It returns the accumulated log entries, and

* It can do something to that **response** or run any needed code.
* Then it returns the **response**.

/// note | Technical Details

If you have dependencies with `yield`, the exit code will run *after* the middleware.

If there were any background tasks (covered in the [Background Tasks](background-tasks.md){.internal-link target=_blank} section, you will see it later), they will run *after* all the middleware.

    void dispatch() {
      boolean scheduleEventRunner = false;
      synchronized (this) {
        if (!isThreadScheduled) {
          isThreadScheduled = true;
          scheduleEventRunner = true;
        }
      }
      if (scheduleEventRunner) {
        try {
          executor.execute(this);
        } catch (Exception e) { // sneaky checked exception

        return new WeakHashMap<>(m);
    }

    /**
     * Associates the specified value with the specified key in the map if the map does not already contain the key.
     * <p>
     * If the map already contains the key, the value associated with the key is returned and the map is unchanged.
     * If the map does not contain the key, the specified value is associated with the key and the value is returned.

        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);
        }
        return sourceMap;
    }

    @Override
    protected void addFieldToSource(final Map<String, Object> sourceMap, final String field, final Object value) {
        if (value instanceof final LocalDateTime ldt) {

interface EventSource {
  /** Returns the original request that initiated this event source. */
  fun request(): Request

  /**
   * Immediately and violently release resources held by this event source. This does nothing if
   * the event source has already been closed or canceled.
   */
  fun cancel()

  fun interface Factory {
    /**
     * Creates a new event source and immediately returns it. Creating an event source initiates an

        final String password = fessConfig.getFesenPassword();
        if (StringUtil.isNotBlank(username) && StringUtil.isNotBlank(password)) {
            builder.put(Constants.FESEN_USERNAME, username);
            builder.put(Constants.FESEN_PASSWORD, password);
        }
        final String authorities = fessConfig.getFesenHttpSslCertificateAuthorities();
        if (StringUtil.isNotBlank(authorities)) {

  }

  public final Set<Feature<?>> getAbsentFeatures() {
    return absentFeatures;
  }

  @Override
  public boolean equals(@Nullable Object object) {
    if (object == this) {
      return true;
    }
    if (object instanceof TesterRequirements) {
      TesterRequirements that = (TesterRequirements) object;
      return this.presentFeatures.equals(that.presentFeatures)

  }

  private boolean tryToComputeNext() {
    state = State.FAILED; // temporary pessimism
    next = computeNext();
    if (state != State.DONE) {
      state = State.READY;
      return true;
    }
    return false;
  }

  @Override
  @ParametricNullness
  public final T next() {
    if (!hasNext()) {
      throw new NoSuchElementException();
    }
    state = State.NOT_READY;

 * Maven stores all the downloaded artifacts (such as dependencies, plugins,
 * and project artifacts). When Maven builds a project, it first checks the
 * local repository to see if the required artifacts are already available.
 * If the artifacts are found locally, Maven uses them directly, which speeds
 * up the build process by avoiding unnecessary downloads.</p>
 *