underlying.put("b", "");

    Map<@Nullable String, Boolean> map =
        transformValues(
            underlying,
            new Function<@Nullable String, Boolean>() {
              @Override
              public Boolean apply(@Nullable String from) {
                return from == null;
              }
            });
    Map<String, Boolean> expected = ImmutableMap.of("a", true, "b", false);

        R extends @Nullable Object, C extends @Nullable Object, V extends @Nullable Object>
    implements Table<R, C, V> {

  @Override
  public boolean containsRow(@Nullable Object rowKey) {
    return Maps.safeContainsKey(rowMap(), rowKey);
  }

  @Override
  public boolean containsColumn(@Nullable Object columnKey) {
    return Maps.safeContainsKey(columnMap(), columnKey);
  }

  @Override
  public Set<R> rowKeySet() {

    private ArtifactRepositoryPolicy snapshots;

    private ArtifactRepositoryPolicy releases;

    private boolean blacklisted;

    private Authentication authentication;

    private Proxy proxy;

    private List<ArtifactRepository> mirroredRepositories = Collections.emptyList();

    private boolean blocked;

    /**
     * Create a local repository or a test repository.
     *

  private static class UnmovableFile extends File {

    private final boolean canRename;
    private final boolean canDelete;

    UnmovableFile(File file, boolean canRename, boolean canDelete) {
      super(file.getPath());
      this.canRename = canRename;
      this.canDelete = canDelete;
    }

    @Override
    public boolean renameTo(File to) {
      return canRename && super.renameTo(to);
    }

    }
    return comparator;
  }

  @Override
  public boolean containsKey(Object key) {
    try {
      return delegate.containsKey(checkValid(key));
    } catch (NullPointerException | ClassCastException e) {
      return false;
    }
  }

  @Override
  public boolean containsValue(Object value) {
    return delegate.containsValue(value);
  }

  @Override

    private volatile long lastAccessTime;

    private final ConcurrentHashMap<String, FileInfo> children;
    private final ReadWriteLock lock;

    private volatile boolean isComplete;
    private volatile boolean hasChanges;
    private DirectoryCacheScope scope;
    private long maxAge;

    private final AtomicInteger inconsistencyCount = new AtomicInteger(0);

    /**

     *
     * @return {@literal true} if the method is {@literal public}
     */
    boolean isPublic();

    /**
     * Returns {@literal true} if the method is {@literal static}.
     *
     * @return {@literal true} if the method is {@literal static}
     */
    boolean isStatic();

    /**
     * Returns {@literal true} if the method is {@literal final}.
     *

        private boolean forceStop = false;
        private boolean componentAvailable = true;
        private final AtomicInteger cpuLoadCallCount = new AtomicInteger(0);

        @Override
        public boolean isForceStop() {
            return forceStop;
        }

        @Override
        public void setForceStop(boolean forceStop) {
            this.forceStop = forceStop;

      @Override
      boolean isNullable(Invokable<?, ?> invokable) {
        return containsNullable(invokable.getAnnotations());
      }

      @Override
      boolean isNullable(Parameter param) {
        return containsNullable(param.getAnnotations());
      }
    };

    abstract boolean isNullable(Invokable<?, ?> invokable);

    abstract boolean isNullable(Parameter param);
  }

        return repositoryLayouts.get(layoutId);
    }

    @Override
    public ArtifactRepository createDeploymentArtifactRepository(
            String id, String url, String layoutId, boolean uniqueVersion) throws UnknownRepositoryLayoutException {
        ArtifactRepositoryLayout layout = repositoryLayouts.get(layoutId);

        checkLayout(id, layoutId, layout);