System.err.println("Unable determine version from JAR file: " + e.getMessage());
        }

        return properties;
    }

    public static void showError(Logger logger, String message, Throwable e, boolean showStackTrace) {
        if (logger == null) {
            System.err.println(message);
            if (showStackTrace && e != null) {
                e.printStackTrace(System.err);
            }

    private final String projectId;

    private File pomFile;

    private List<ProjectBuildingResult> results;

    public ProjectBuildingException(String projectId, String message, Throwable cause) {
        super(createMessage(message, projectId, null), cause);
        this.projectId = projectId;
    }

    /**
     * @param projectId
     * @param message
     * @param pomFile   pom file location

  static final class SomeUncheckedException extends RuntimeException {}

  static final class SomeChainingException extends RuntimeException {
    public SomeChainingException(Throwable cause) {
      super(cause);
    }
  }

  private TestExceptions() {}

    void addEventMonitor(EventMonitor monitor);

    void dispatchStart(String event, String target);

    void dispatchEnd(String event, String target);

    void dispatchError(String event, String target, Throwable cause);

  }

  @J2ktIncompatible
  @GwtIncompatible // Thread
  private void testSupplierThreadSafe(Function<Supplier<Boolean>, Supplier<Boolean>> memoizer)
      throws Throwable {
    AtomicInteger count = new AtomicInteger(0);
    AtomicReference<Throwable> thrown = new AtomicReference<>(null);
    int numThreads = 3;
    Thread[] threads = new Thread[numThreads];
    long timeout = SECONDS.toNanos(60);

  }

  @J2ktIncompatible
  @GwtIncompatible // Thread
  private void testSupplierThreadSafe(Function<Supplier<Boolean>, Supplier<Boolean>> memoizer)
      throws Throwable {
    AtomicInteger count = new AtomicInteger(0);
    AtomicReference<Throwable> thrown = new AtomicReference<>(null);
    int numThreads = 3;
    Thread[] threads = new Thread[numThreads];
    long timeout = SECONDS.toNanos(60);

      return; // someone else has run or is running.
    }

    boolean run = !isDone();
    T result = null;
    Throwable error = null;
    try {
      if (run) {
        result = runInterruptibly();
      }
    } catch (Throwable t) {
      restoreInterruptIfIsInterruptedException(t);
      error = t;
    } finally {

/**
 * InvalidPluginDescriptorException
 */
public class InvalidPluginDescriptorException extends PlexusConfigurationException {

    public InvalidPluginDescriptorException(String message, Throwable cause) {
        super(message, cause);
    }

    public InvalidPluginDescriptorException(String message) {
        super(message);
    }

public class MisconfiguredToolchainException extends Exception {

    public MisconfiguredToolchainException(String message) {
        super(message);
    }

    public MisconfiguredToolchainException(String message, Throwable orig) {
        super(message, orig);
    }

 */
package org.apache.maven.artifact.repository.metadata;

/**
 * Error while installing repository metadata.
 *
 */
@Deprecated
public class RepositoryMetadataInstallationException extends Throwable {
    public RepositoryMetadataInstallationException(String message) {
        super(message);
    }

    public RepositoryMetadataInstallationException(String message, Exception e) {
        super(message, e);
    }