assertThrows(NoSuchElementException.class, () -> iterator.previous());
    assertThrows(UnsupportedOperationException.class, () -> iterator.remove());
    assertThrows(UnsupportedOperationException.class, () -> iterator.set("a"));
    assertThrows(UnsupportedOperationException.class, () -> iterator.add("a"));
  }

  public void testEmptyModifiableIterator() {

   */
  private static class DiesOnIteratorArrayList extends ArrayList<String> {
    /**
     * @throws UnsupportedOperationException all the time
     */
    @Override
    public Iterator<String> iterator() {
      throw new UnsupportedOperationException();
    }
  }

  public void testGetLast_withDefault_not_empty_list() {
    // TODO: verify that this is the best testing strategy.

    }

    /**
     * Get the SMB2 dialect identifier
     *
     * @return the dialect
     */
    public final int getDialect() {
        if (!this.smb2) {
            throw new UnsupportedOperationException();
        }
        return this.dialect;
    }

    /**
     * Check if this dialect version is at least the specified version
     *
     * @param v the version to compare against

    public void close() throws CIFSException {
        if (this.next != null) {
            doClose();
        }
    }

    @Override
    public void remove() {
        throw new UnsupportedOperationException("remove");
    }

     *         any.
     */
    public PersistedToolchains read(XmlPullParser parser, boolean strict) throws IOException, XmlPullParserException {
        throw new UnsupportedOperationException("Not yet implemented");
    }

    /**
     * @param reader a reader object.
     * @param strict a strict object.
     * @return PersistedToolchains
     * @throws IOException IOException if any.

    Cache<Integer, Integer> cache =
        new AbstractCache<Integer, Integer>() {
          @Override
          public Integer getIfPresent(Object key) {
            throw new UnsupportedOperationException();
          }

          @Override
          public void invalidate(Object key) {
            invalidated.add(key);
          }
        };

   *
   * <p>Because of the nature of single-thread execution, the methods {@code scheduleAtFixedRate}
   * and {@code scheduleWithFixedDelay} are not supported by this class and will throw an
   * UnsupportedOperationException.
   *
   * <p>The implementation deviates from the {@code ExecutorService} specification with regards to
   * the {@code shutdownNow} method. First, "best-effort" with regards to canceling running tasks is

              endOfData();
            }
            haveBeenCalled = true;
            return 0;
          }
        };

    assertEquals(0, (int) iter.next());

    assertThrows(UnsupportedOperationException.class, iter::remove);
  }


  @GwtIncompatible // weak references
  @J2ktIncompatible
  public void testFreesNextReference() {
    Iterator<Object> itr =
        new AbstractIterator<Object>() {

        if (!iterator.hasNext()) {
          iterator = iterable.iterator();
        }
        return iterator.next();
      }

      @Override
      public void remove() {
        throw new UnsupportedOperationException();
      }
    };
  }

  static <T extends @Nullable Object> T get(Iterator<T> iterator, int position) {
    for (int i = 0; i < position; i++) {
      iterator.next();
    }

            } catch (Exception e) {
                throw new RuntimeException("Unable to create repository", e);
            }
        } else {
            // TODO
            throw new UnsupportedOperationException("Not yet implemented");
        }
    }