buffer.append(" among available goals ");
            List<MojoDescriptor> mojos = pluginDescriptor.getMojos();
            if (mojos != null) {
                for (Iterator<MojoDescriptor> it = mojos.iterator(); it.hasNext(); ) {
                    MojoDescriptor mojo = it.next();
                    if (mojo != null) {
                        buffer.append(mojo.getGoal());
                    }

   * entries will not be returned by the iterator. If existing entries are removed during iteration,
   * they will be absent (unless they were already returned).
   *
   * If there are I/O problems during iteration, this iterator fails silently. For example, if the
   * hosting filesystem becomes unreachable, the iterator will omit elements rather than throwing
   * exceptions.
   *

        } catch (NullPointerException | ClassCastException e) {
          return false;
        }
      }

      @Override
      public Iterator<Entry<K, V>> iterator() {
        return delegate().iterator();
      }

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

      @Override
      public boolean remove(Object o) {

        tempFile.deleteOnExit();
        markForDeletion(tempFile);

        return tempFile;
    }

    public void cleanUp() throws IOException {
        for (Iterator it = filesToDelete.iterator(); it.hasNext(); ) {
            File file = (File) it.next();

            if (file.exists()) {
                if (file.isDirectory()) {
                    FileUtils.deleteDirectory(file);

                new TransferResourceAndSize(resource, event.getTransferredBytes()));

        buffer.append("Progress (").append(transfers.size()).append("): ");

        Iterator<TransferResourceAndSize> entries = transfers.values().iterator();
        while (entries.hasNext()) {
            TransferResourceAndSize entry = entries.next();
            // just in case, make sure 0 <= complete <= total

    // TODO(cpovirk): are we over-wrapping?
    this.delegate = Collections.unmodifiableSet(delegate);
  }

  @Override
  public UnmodifiableIterator<E> iterator() {
    return Iterators.unmodifiableIterator(delegate.iterator());
  }

  @Override
  public boolean contains(@Nullable Object object) {
    return object != null && delegate.contains(object);
  }

  @Override

    private List<Restriction> intersection(List<Restriction> r1, List<Restriction> r2) {
        List<Restriction> restrictions = new ArrayList<>(r1.size() + r2.size());
        Iterator<Restriction> i1 = r1.iterator();
        Iterator<Restriction> i2 = r2.iterator();
        Restriction res1 = i1.next();
        Restriction res2 = i2.next();

        boolean done = false;
        while (!done) {

      throw new Error();
    } catch (AssertionFailedError expected) {
    }
    try {
      assertEmpty(
          new Iterable<String>() {
            @Override
            public Iterator<String> iterator() {
              return singleton("a").iterator();
            }
          });
      throw new Error();
    } catch (AssertionFailedError expected) {
    }
  }

  public void testIsEmpty_map() {

      throw new Error();
    } catch (AssertionFailedError expected) {
    }
    try {
      assertEmpty(
          new Iterable<String>() {
            @Override
            public Iterator<String> iterator() {
              return singleton("a").iterator();
            }
          });
      throw new Error();
    } catch (AssertionFailedError expected) {
    }
  }

  public void testIsEmpty_map() {

  public void testAddAllConcurrentWithIteration() {
    assertThrows(
        ConcurrentModificationException.class,
        () -> {
          Iterator<E> iterator = collection.iterator();
          assertTrue(collection.addAll(MinimalCollection.of(e3(), e0())));
          iterator.next();
        });
  }

  @CollectionFeature.Require(absent = SUPPORTS_ADD)
  @CollectionSize.Require(absent = ZERO)