} catch (ClassNotFoundException beforeJava9) {
          return null;
        }
        return VarHandleLittleEndianBytes.INSTANCE;
      }
    };

    /** Implementation used by J2ObjC environments, overridden for other environments. */
    @Nullable LittleEndianBytes tryMakeVarHandleLittleEndianBytes() {
      return null;
    }
  }

  /** Deter instantiation of this class. */

    }

    @Test
    @DisplayName("Constructor with all null parameters should work")
    void testConstructorWithAllNullParameters() {
        // Test that all null parameters are handled properly
        SmbNegotiation negotiationAllNull = new SmbNegotiation(null, null, null, null);

        assertNull(negotiationAllNull.getRequest());
        assertNull(negotiationAllNull.getResponse());

            throws GraphConflictResolutionException {
        if (policy == null) {
            throw new GraphConflictResolutionException("no GraphConflictResolutionPolicy injected");
        }

        if (graph == null) {
            return null;
        }

        final MetadataGraphVertex entry = graph.getEntry();
        if (entry == null) {
            return null;
        }

        if (graph.isEmpty()) {

            assertNotNull(writeRequest);
        }

        @Test
        @DisplayName("Should accept null file ID in constructor")
        void testConstructorWithNullFileId() {
            assertDoesNotThrow(() -> new Smb2WriteRequest(mockConfig, null));
        }

        @Test
        @DisplayName("Should accept empty file ID in constructor")
        void testConstructorWithEmptyFileId() {

    }

    /**
     * Test constructor with both null message and null cause
     */
    public void test_constructor_withNullMessageAndNullCause() {
        CrawlerSystemException exception = new CrawlerSystemException(null, null);

        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());
    }

    /**

    }

    @Test
    @DisplayName("Should handle null preauth integrity for SMB 3.0.0")
    void testDeriveKeys_NullPreauthForSMB300() {
        // Given
        int dialect = Smb2Constants.SMB2_DIALECT_0300;

        // When - SMB 3.0.0 doesn't use preauth integrity, so null should be acceptable
        byte[] signingKey = Smb3KeyDerivation.deriveSigningKey(dialect, sessionKey, null);

        // Then

      return;
    }
    this.firstEntry = ENDPOINT;
    this.lastEntry = ENDPOINT;
    // Either both arrays are null or neither is, but we check both to satisfy the nullness checker.
    if (predecessor != null && successor != null) {
      Arrays.fill(predecessor, 0, size(), 0);
      Arrays.fill(successor, 0, size(), 0);
    }
    super.clear();
  }

  /*

  public T or(Supplier<? extends T> supplier) {
    return checkNotNull(
        supplier.get(), "use Optional.orNull() instead of a Supplier that returns null");
  }

  @Override
  public @Nullable T orNull() {
    return null;
  }

  @Override
  public Set<T> asSet() {
    return Collections.emptySet();
  }

  @Override
  public <V> Optional<V> transform(Function<? super T, V> function) {
    checkNotNull(function);

    void testReadMethodsReturnZero() {
        Trans2QueryFSInformation cmd = new Trans2QueryFSInformation(10);
        assertEquals(0, cmd.readSetupWireFormat(null, 0, 0));
        assertEquals(0, cmd.readParametersWireFormat(null, 0, 0));
        assertEquals(0, cmd.readDataWireFormat(null, 0, 0));
    }

    @Test
    @DisplayName("toString includes information level in hex")
    void testToString() {
        int level = 0xABC;

      }
    }
    if (thread == null) {
      thread = new Thread((ThreadGroup) null, finalizer, threadName);
    }
    thread.setDaemon(true);

    try {
      if (inheritableThreadLocals != null) {
        inheritableThreadLocals.set(thread, null);
      }
    } catch (Throwable t) {
      logger.log(
          Level.INFO,