* initial write to timer is never definitely visible to Fire.run since it is assigned after
   * SES.schedule is called. Therefore Fire.run has to check for null. However, it should be visible
   * if Fire.run is called by delegate.addListener since addListener is called after the assignment

  enum WorkerRunningState {
    /** Runnable is not running and not queued for execution */
    IDLE,
    /** Runnable is not running, but is being queued for execution */
    QUEUING,
    /** runnable has been submitted but has not yet begun execution */
    QUEUED,
    RUNNING,
  }

  /** Underlying executor that all submitted Runnable objects are run on. */
  private final Executor executor;

  @GuardedBy("queue")

   * words, for the default {@code expectContents()} implementation, the number of occurrences of
   * each given element has increased by one since the test collection was created, and the number
   * of occurrences of all other elements has not changed.
   *
   * <p>Note: This means that a test like the following will fail if {@code collection} is a {@code
   * Set}:
   *
   * <pre>

import org.eclipse.aether.resolution.ArtifactDescriptorResult;

/**
 * Maven relocation source.
 * Note: implementations of this component should avoid the "default" name (has special meaning in Eclipse Sisu) and
 * explicitly order implementations using Sisu priorities.
 *
 * @since 4.0.0
 */
public interface MavenArtifactRelocationSource {
    /**

                goal = "";
            }

            // This is the case where someone has executed a single goal from the command line
            // of the form:
            //
            // mvn remote-resources:process
            //
            // From the metadata stored on the server which has been created as part of a standard

          }
        }
      }
    }

    /**
     * Checks if the executor has been shut down and increments the running task count.
     *
     * @throws RejectedExecutionException if the executor has been previously shutdown
     */
    private void startTask() {
      synchronized (lock) {
        if (shutdown) {

   * value for which {@link Comparable#compareTo(Object)} never returns a positive value for any
   * input of type {@code C}.
   *
   * <p>The default implementation throws {@code NoSuchElementException}.
   *
   * @return the minimum value of type {@code C}; never null
   * @throws NoSuchElementException if the type has no (practical) minimum value; for example,

     */
    private final Map<Path, String> descriptors;

    /**
     * Whether module hierarchy was detected. If false, then package hierarchy is assumed.
     * In a package hierarchy, the {@linkplain #descriptors} map has either zero or one entry.
     * In a module hierarchy, the descriptors map may have an arbitrary number of entries,
     * including one (so the map size cannot be used as a criterion).
     *
     * @see #isModuleHierarchy()

    // TODO(kevinb): pad?
    this.queue = new Object[queueSize];
  }

  @Override
  public int size() {
    return size;
  }

  /**
   * Adds the given element to this queue. If this queue has a maximum size, after adding {@code
   * element} the queue will automatically evict its greatest element (according to its comparator),
   * which may be {@code element} itself.
   *
   * @return {@code true} always
   */

            if (propValue.startsWith("!")) {
                reverseValue = true;
                propValue = propValue.substring(1);
            }

            // we have a value, so it has to match the system value...
            return reverseValue != propValue.equals(sysValue);
        } else {
            return reverseName != (sysValue != null && !sysValue.isEmpty());
        }
    }

    @Override