assertEquals(4, (int) mmHeap.pollLast());
    assertEquals(3, (int) mmHeap.peekLast());
    assertEquals(3, (int) mmHeap.pollLast());
    assertEquals(1, (int) mmHeap.peek());
    assertEquals(2, (int) mmHeap.peekLast());
    assertEquals(2, (int) mmHeap.pollLast());
    assertEquals(1, (int) mmHeap.peek());
    assertEquals(1, (int) mmHeap.peekLast());
    assertEquals(1, (int) mmHeap.pollLast());
    assertNull(mmHeap.peek());

    assertEquals(4, (int) mmHeap.pollLast());
    assertEquals(3, (int) mmHeap.peekLast());
    assertEquals(3, (int) mmHeap.pollLast());
    assertEquals(1, (int) mmHeap.peek());
    assertEquals(2, (int) mmHeap.peekLast());
    assertEquals(2, (int) mmHeap.pollLast());
    assertEquals(1, (int) mmHeap.peek());
    assertEquals(1, (int) mmHeap.peekLast());
    assertEquals(1, (int) mmHeap.pollLast());
    assertNull(mmHeap.peek());

                if (phase != null) {
                    Deque<String> phases = getLifecycles(project);
                    if (!Objects.equals(phase, phases.peekLast())) {
                        phases.addLast(phase);
                        if ("clean".equals(phase)) {
                            cleanProjectLocalRepository(project);
                        }
                    }

        <field xml.format="((PluginDescriptor.Builder) context.peekLast()).build().getId() + &quot;:&quot; + mojoDescriptor.build().getGoal()">
          <name>id</name>
          <version>2.0.0+</version>
          <type>String</type>
          <description>the id of the mojo, based on the goal name</description>
        </field>

    public E peekFirst() {
      synchronized (mutex) {
        return delegate().peekFirst();
      }
    }

    @Override
    @CheckForNull
    public E peekLast() {
      synchronized (mutex) {
        return delegate().peekLast();
      }
    }

    @Override
    public boolean removeFirstOccurrence(@CheckForNull Object o) {
      synchronized (mutex) {