}

    @Test
    @DisplayName("Remove delegates to underlying iterator")
    void removeDelegation() {
        when(delegate.hasNext()).thenReturn(false);

        TestIterator iterator = new TestIterator(null);
        iterator.remove();

        verify(delegate).remove();
    }

    @Test
    @DisplayName("Remove propagates UnsupportedOperationException")
    void removeException() {

func Lstat(name string) (info os.FileInfo, err error) {
	defer updateOSMetrics(osMetricLstat, name)(err)
	return os.Lstat(name)
}

// Remove captures time taken to call os.Remove
func Remove(deletePath string) (err error) {
	defer updateOSMetrics(osMetricRemove, deletePath)(err)
	return os.Remove(deletePath)
}

// Stat captures time taken to call os.Stat
func Stat(name string) (info os.FileInfo, err error) {

	f, err := os.CreateTemp(t.TempDir(), "")
	if err != nil {
		t.Fatal(err)
	}
	name1 := f.Name()
	defer os.Remove(name1)
	f.WriteString("aaaaaaaaaa")
	f.Close()

	f, err = os.CreateTemp(t.TempDir(), "")
	if err != nil {
		t.Fatal(err)
	}
	name2 := f.Name()
	defer os.Remove(name2)
	f.WriteString("bbbbbbbbbb")
	f.Close()

	if err = AppendFile(name1, name2, false); err != nil {
		t.Error(err)

            if (log.isDebugEnabled()) {
                log.debug("Removing transport connection " + trans + " (" + System.identityHashCode(trans) + ")");
            }
            this.connections.remove(trans);
            this.nonPooledConnections.remove(trans);
            activeConnections.decrementAndGet();
            connectionsRemoved.incrementAndGet();
        }
    }

    /**
     * {@inheritDoc}
     *

 *
 * <p>For instance, if <i>steps</i> is 5, one example sequence that will be tested is:
 *
 * <ol>
 *   <li>remove();
 *   <li>hasNext()
 *   <li>hasNext();
 *   <li>remove();
 *   <li>next();
 * </ol>
 *
 * <p>This particular order of operations may be unrealistic, and testing all 3^5 of them may be
 * thought of as overkill; however, it's difficult to determine which proper subset of this massive

          stale-issue-label: "stale"
          # reason for closed the issue default value is not_planned
          close-issue-reason: completed
          # List of labels to remove when issues/PRs unstale. 
          labels-to-remove-when-unstale: 'stat:awaiting response'
          only-labels: "stat:awaiting response"
          stale-issue-message: > 

      }
    }

    @Override
    public @Nullable V remove(@Nullable Object key) {
      synchronized (mutex) {
        return delegate().remove(key);
      }
    }

    @Override
    public boolean remove(@Nullable Object key, @Nullable Object value) {
      synchronized (mutex) {
        return delegate().remove(key, value);
      }
    }

    @Override

   *     operation
   */
  void remove(Range<C> range);

  /**
   * Removes all ranges from this {@code RangeSet} (optional operation). After this operation,
   * {@code this.contains(c)} will return false for all {@code c}.
   *
   * <p>This is equivalent to {@code remove(Range.all())}.
   *

      previous = current = next;
      next = next.next;
      nextIndex++;
      return current;
    }

    @Override
    public void remove() {
      checkForConcurrentModification();
      checkState(current != null, "no calls to next() since the last call to remove()");
      if (current != next) { // after call to next()
        previous = current.previous;
        nextIndex--;

        if (!hasNext) {
            throw new NoSuchElementException();
        }
        hasNext = false;
        return value;
    }

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