Ordering.<Integer>natural().<Integer>nullsFirst();

  private static final List<@Nullable Integer> IN_ORDER_VALUES =
      unmodifiableList(Arrays.<@Nullable Integer>asList(null, 1, 2, 3, 4, 5));

  public void testCreateEmptyRangeFails() {
    for (BoundType lboundType : BoundType.values()) {
      for (BoundType uboundType : BoundType.values()) {
        assertThrows(

       * since the Equivalence base type now implements this logic itself
       */
      assertTrue(item + " must be inequivalent to null", !equivalence.equivalent(item, null));
      assertTrue("null must be inequivalent to " + item, !equivalence.equivalent(null, item));
      assertTrue(item + " must be equivalent to itself", equivalence.equivalent(item, item));
      assertEquals(

  /**
   * The collection must not throw {@code NullPointerException} on calls such as {@code
   * contains(null)} or {@code remove(null)}, but instead must return a simple {@code false}.
   */
  ALLOWS_NULL_QUERIES,
  ALLOWS_NULL_VALUES(ALLOWS_NULL_QUERIES),

  /**
   * Indicates that a collection disallows certain elements (other than {@code null}, whose validity

       * since the Equivalence base type now implements this logic itself
       */
      assertTrue(item + " must be inequivalent to null", !equivalence.equivalent(item, null));
      assertTrue("null must be inequivalent to " + item, !equivalence.equivalent(null, item));
      assertTrue(item + " must be equivalent to itself", equivalence.equivalent(item, item));
      assertEquals(

    private static Map<String, Expression> expressionDocumentation;

    public static Map<String, Expression> load() throws ExpressionDocumentationException {
        if (expressionDocumentation == null) {
            expressionDocumentation = new HashMap<>();

            ClassLoader docLoader = initializeDocLoader();

            for (String root : EXPRESSION_ROOTS) {
                try (InputStream docStream =

        // Test null string (should encode as 0 length)
        ndrBuffer.reset();
        ndrBuffer.enc_ndr_referent(null, 2); // Use referent to encode null
        assertEquals(4, ndrBuffer.getIndex());
        assertEquals(4, ndrBuffer.getLength());
        assertEquals(0, Encdec.dec_uint32le(buffer, 0)); // Should be 0 for null referent
    }

    @Test

   * forward to this implementation.
   */
  protected @Nullable Entry<E> standardFirstEntry() {
    Iterator<Entry<E>> entryIterator = entrySet().iterator();
    if (!entryIterator.hasNext()) {
      return null;
    }
    Entry<E> entry = entryIterator.next();
    return Multisets.immutableEntry(entry.getElement(), entry.getCount());
  }

  @Override
  public @Nullable Entry<E> lastEntry() {

    /*
     * Even though it's weird to pass a defaultValue that is null, some callers do so. Those who
     * pass a literal "null" should probably just use `get`, but I would expect other callers to
     * pass an expression that *might* be null. This could happen with:
     *
     * - a `getFooOrDefault(@Nullable Foo defaultValue)` method that returns

      if (lhs == rhs) {
        return 0;
      }
      if (lhs == null) {
        // lhs (null) comes just before justAfterNull.
        // If rhs is b, lhs comes first.
        if (rhs.equals(justAfterNull)) {
          return -1;
        }
        return justAfterNull.compareTo(rhs);
      }
      if (rhs == null) {
        // rhs (null) comes just before justAfterNull.
        // If lhs is b, rhs comes first.

        int bytesRead = response.readDataWireFormat(buffer, 0, buffer.length);

        assertEquals(20, bytesRead, "Should read 20 bytes");
        assertNotNull(response.info, "Info object should not be null");
        assertTrue(response.info instanceof Trans2QueryFSInformationResponse.SmbInfoAllocation, "Info should be of type SmbInfoAllocation");