ALWAYS_DOWNLOAD_ENV = MAVEN_WRAPPER_ALWAYS_DOWNLOAD; private boolean alwaysUnpack; private boolean alwaysDownload; private java.net.URI distribution; private String distributionBase; private String distributionPath; private String zipBase; private String zipPath; public void WrapperConfiguration(); public boolean isAlwaysDownload(); public void setAlwaysDownload(boolean); public boolean isAlwaysUnpack(); public void setAlwaysUnpack(boolean); public java.net.URI getDistribution(); public void setDi...

        }
    }

    private TransferListener determineTransferListener(
            final boolean quiet,
            final boolean verbose,
            final CommandLine commandLine,
            final MavenExecutionRequest request) {
        boolean runningOnCI = isRunningOnCI(request.getSystemProperties());
        boolean quietCI = runningOnCI && !commandLine.hasOption(CLIManager.FORCE_INTERACTIVE);

      }
    }

    @Override
    public boolean contains(@Nullable Object o) {
      synchronized (mutex) {
        return delegate().contains(o);
      }
    }

    @Override
    public boolean containsAll(Collection<?> c) {
      synchronized (mutex) {
        return delegate().containsAll(c);
      }
    }

    @Override
    public boolean isEmpty() {
      synchronized (mutex) {

      }
    }

    @Override
    public boolean contains(@Nullable Object o) {
      synchronized (mutex) {
        return delegate().contains(o);
      }
    }

    @Override
    public boolean containsAll(Collection<?> c) {
      synchronized (mutex) {
        return delegate().containsAll(c);
      }
    }

    @Override
    public boolean isEmpty() {
      synchronized (mutex) {

            }
        }

        return true;
    }

    private boolean hasExpression(String value) {
        return value != null && value.contains("${");
    }

    private boolean hasProjectExpression(String value) {
        return value != null && value.contains("${project.");
    }

    private boolean validateStringNotEmpty(
            String fieldName,

    // TODO let the scope handler deal with this
    private static boolean isCompilePathElement(final String scope) {
        return Artifact.SCOPE_COMPILE.equals(scope)
                || Artifact.SCOPE_PROVIDED.equals(scope)
                || Artifact.SCOPE_SYSTEM.equals(scope);
    }

    // TODO let the scope handler deal with this
    private static boolean isRuntimePathElement(final String scope) {

   *
   * <p>This method delegates to the appropriate methods of {@link NavigableSet} (namely {@link
   * NavigableSet#subSet(Object, boolean, Object, boolean) subSet()}, {@link
   * NavigableSet#tailSet(Object, boolean) tailSet()}, and {@link NavigableSet#headSet(Object,
   * boolean) headSet()}) to actually construct the view. Consult these methods for a full
   * description of the returned view's behavior.
   *

   * @return {@code true} if any element was removed from {@code iterator}
   */
  @CanIgnoreReturnValue
  public static boolean removeAll(Iterator<?> removeFrom, Collection<?> elementsToRemove) {
    checkNotNull(elementsToRemove);
    boolean result = false;
    while (removeFrom.hasNext()) {
      if (elementsToRemove.contains(removeFrom.next())) {
        removeFrom.remove();
        result = true;

        ProjectBuildingResult build(
                boolean parent, Artifact artifact, boolean allowStubModel, List<ArtifactRepository> repositories)
                throws ProjectBuildingException {
            org.eclipse.aether.artifact.Artifact pomArtifact = RepositoryUtils.toArtifact(artifact);
            pomArtifact = ArtifactDescriptorUtils.toPomArtifact(pomArtifact);

            boolean localProject;

            try {

    }

    @Override
    public boolean put(@ParametricNullness K key, @ParametricNullness V value) {
      throw new UnsupportedOperationException();
    }

    @Override
    public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {
      throw new UnsupportedOperationException();
    }

    @Override
    public boolean putAll(Multimap<? extends K, ? extends V> multimap) {