.top10 {
	margin-top: 1.0em;
}

.top15 {
	margin-top: 1.5em;
}

.top20 {
	margin-top: 2.0em;
}

.top25 {
	margin-top: 2.5em;
}

.top30 {
	margin-top: 3.0em;
}

.container .text-muted {
	margin: 20px 0;
}

.notification {
	text-align: center;
}

ul.has-error {
	color: #dd4b39 !important;
	list-style-type: none;
	padding: 0;
}

.form-group .has-error + .form-control {

ot(.disabled).active,.bg-gradient-gray-dark.btn:not(:disabled):not(.disabled):active{background:#1d2124 linear-gradient(180deg,#3f4245,#1d2124) repeat-x!important}[class^=bg-].disabled{opacity:.65}a.text-muted:hover{color:#007bff!important}.link-muted{color:#5d6974}.link-muted:focus,.link-muted:hover{color:#464f58}.link-black{color:#6c757d}.link-black:focus,.link-black:hover{color:#e6e8ea}.accent-primary .btn-link,.accent-primary a:not(.dropdown-item){color:#007bff}.accent-primary .btn-link:hover,.accent-primary...

tive, .bg-gradient-gray-dark.btn.active {\n  background: #1d2124 linear-gradient(180deg, #3f4245, #1d2124) repeat-x !important;\n}\n\n[class^='bg-'].disabled {\n  opacity: .65;\n}\n\na.text-muted:hover {\n  color: #007bff !important;\n}\n\n.link-muted {\n  color: #5d6974;\n}\n\n.link-muted:hover, .link-muted:focus {\n  color: #464f58;\n}\n\n.link-black {\n  color: #6c757d;\n}\n\n.link-black:hover, .link-black:focus {\n  color: #e6e8ea;\n}\n\n.accent-primary .btn-link,\n.accent-primary a:not(.dropdown-item)...

    TestMap<K, V> inner = new TestMap<>(innermost, mutex);
    NavigableMap<K, V> outer = Synchronized.navigableMap(inner, mutex);
    return outer;
  }

  static class TestEntry<K, V> extends ForwardingMapEntry<K, V> implements Serializable {
    private final Entry<K, V> delegate;
    private final Object mutex;

    TestEntry(Entry<K, V> delegate, Object mutex) {
      this.delegate = delegate;
      this.mutex = mutex;

    final Set<E> delegate;
    public Object mutex;

    public TestSet(Set<E> delegate, @Nullable Object mutex) {
      this.delegate = delegate;
      this.mutex = mutex;
    }

    @Override
    protected Set<E> delegate() {
      return delegate;
    }

    @Override
    public String toString() {
      assertTrue(Thread.holdsLock(mutex));
      return super.toString();
    }

    @Override

      return delegate.offer(o);
    }

    @Override
    public @Nullable E poll() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.poll();
    }

    @Override
    public E remove() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.remove();
    }

    @Override
    public boolean remove(Object object) {
      assertTrue(Thread.holdsLock(mutex));

    public TestBiMap(BiMap<K, V> delegate, Object mutex) {
      super(delegate, mutex);
      this.delegate = delegate;
    }

    @Override
    public @Nullable V forcePut(K key, V value) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.forcePut(key, value);
    }

    @Override
    public BiMap<V, K> inverse() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.inverse();
    }

      return delegate.offer(o);
    }

    @Override
    public @Nullable E poll() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.poll();
    }

    @Override
    public E remove() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.remove();
    }

    @Override
    public boolean remove(Object object) {
      assertTrue(Thread.holdsLock(mutex));

    assertSame(MUTEX, ((SynchronizedNavigableSet<String>) descendingSet).mutex);
  }

  public void testHeadSet_E() {
    NavigableSet<String> map = create();
    SortedSet<String> headSet = map.headSet("a");
    assertTrue(headSet instanceof SynchronizedSortedSet);
    assertSame(MUTEX, ((SynchronizedSortedSet<String>) headSet).mutex);
  }

  public void testHeadSet_E_B() {

    NavigableSet<E> outer = Synchronized.navigableSet(inner, null);
    inner.mutex = outer;
    return outer;
  }

  static class TestSet<E> extends SynchronizedSetTest.TestSet<E> implements NavigableSet<E> {

    TestSet(NavigableSet<E> delegate, @Nullable Object mutex) {
      super(delegate, mutex);
    }

    @Override
    protected NavigableSet<E> delegate() {