* @return the new first entry for the table
     */
    @GuardedBy("this")
    @Nullable E removeFromChain(E first, E entry) {
      int newCount = count;
      E newFirst = entry.getNext();
      for (E e = first; e != entry; e = e.getNext()) {
        E next = copyEntry(e, newFirst);
        if (next != null) {
          newFirst = next;
        } else {
          newCount--;
        }
      }

        list.addLast("3");
        SLinkedList<String>.Entry e = list.getFirstEntry();
        assertThat(e.getPrevious(), is(nullValue()));
        assertThat(e.getNext().getElement(), is("2"));
        e = list.getLastEntry();
        assertThat(e.getNext(), is(nullValue()));
        assertThat(e.getPrevious().getElement(), is("2"));
        list.getEntry(1).remove();
        assertThat(list.getFirst(), is("1"));

  /** Returns the hash prefix given the current mask. */
  static int getHashPrefix(int value, int mask) {
    return value & ~mask;
  }

  /** Returns the index, or 0 if the entry is "null". */
  static int getNext(int entry, int mask) {
    return entry & mask;
  }

  /** Returns a new value combining the prefix and suffix using the given mask. */
  static int maskCombine(int prefix, int suffix, int mask) {

            assertEquals(second, testMessage.getNext());
            assertEquals(third, second.getNext());
        }

        @Test
        @DisplayName("Should set next message")
        void testSetNext() {
            TestServerMessageBlock2 nextMessage = new TestServerMessageBlock2(mockConfig);
            testMessage.setNext(nextMessage);
            assertEquals(nextMessage, testMessage.getNext());

  @Override
  public @Nullable Entry<K, V> firstEntry() {
    return Iterators.<@Nullable Entry<K, V>>getNext(entryIterator(), null);
  }

  @Override
  public @Nullable Entry<K, V> lastEntry() {
    return Iterators.<@Nullable Entry<K, V>>getNext(descendingEntryIterator(), null);
  }

  @Override
  public @Nullable Entry<K, V> pollFirstEntry() {

     *
     * @return whether this is a cancel request
     */
    boolean isCancel();

    /**
     * Gets the next request in the chain.
     *
     * @return chained request
     */
    Request getNext();

    /**
     * Gets the response for this request.
     *
     * @return the response for this request
     */
    Response getResponse();

      assertEquals(hashOne, entryOne.getHash());
      assertThat(entryOne.getNext()).isNull();
      assertSame(valueOne, copyOne.getValue());

      InternalEntry<Object, Object, ?> copyTwo = segment.copyForTesting(entryTwo, copyOne);
      assertSame(keyTwo, copyTwo.getKey());
      assertEquals(hashTwo, copyTwo.getHash());
      assertSame(copyOne, copyTwo.getNext());
      assertSame(valueTwo, copyTwo.getValue());
    }
  }

      assertEquals(hashOne, entryOne.getHash());
      assertThat(entryOne.getNext()).isNull();
      assertSame(valueOne, copyOne.getValue());

      InternalEntry<Object, Object, ?> copyTwo = segment.copyForTesting(entryTwo, copyOne);
      assertSame(keyTwo, copyTwo.getKey());
      assertEquals(hashTwo, copyTwo.getHash());
      assertSame(copyOne, copyTwo.getNext());
      assertSame(valueTwo, copyTwo.getValue());
    }
  }

     *
     * @return request was handled asynchronously
     */
    boolean isResponseAsync();

    /**
     *
     * @return next chained message
     */
    @Override
    CommonServerMessageBlockRequest getNext();

    /**
     * Splits this request for processing.
     *
     * @return the following message
     */
    CommonServerMessageBlockRequest split();

    /**
     * Gets the size of this message.

    }

    @Test
    @DisplayName("Test getNext returns null")
    void testGetNext() {
        // Given
        Smb2CancelRequest request = new Smb2CancelRequest(mockConfig, 1L, 0L);

        // When
        ServerMessageBlock2Request<?> next = request.getNext();

        // Then
        assertNull(next, "Cancel requests should not have next requests in chain");