return null;
        }
    }

    /**
     * If the class is a primitive type, returns its wrapper class.
     *
     * @param className
     *            The class name. Must not be {@literal null} or empty.
     * @return {@link Class}
     * @throws EmptyArgumentException
     *             If the class name is {@literal null} or empty.

        String msg, pathInfo, server = null;
        boolean offerBasic, possibleWorkgroup = true;
        NtlmPasswordAuthentication ntlm = null;
        final HttpSession ssn = req.getSession(false);

        pathInfo = req.getPathInfo();
        if (pathInfo != null) {
            int i;
            server = parseServerAndShare(pathInfo);
            if (server != null && (i = server.indexOf('/')) > 0) {

        if (content != null) {
            addFieldToSource(sourceMap, "content", content);
        }
        if (createdBy != null) {
            addFieldToSource(sourceMap, "createdBy", createdBy);
        }
        if (createdTime != null) {
            addFieldToSource(sourceMap, "createdTime", createdTime);
        }
        if (sortOrder != null) {

        if (out != null && !out.isOpen()) {
            throw new IOException("DCERPC pipe is no longer open");
        }

        if (in == null) {
            in = (SmbFileInputStream) pipe.getNamedPipeInputStream();
        }
        if (out == null) {
            out = (SmbFileOutputStream) pipe.getNamedPipeOutputStream();
        }

@GwtCompatible
final class CollectPreconditions {

  static void checkEntryNotNull(Object key, Object value) {
    if (key == null) {
      throw new NullPointerException("null key in entry: null=" + value);
    } else if (value == null) {
      throw new NullPointerException("null value in entry: " + key + "=null");
    }
  }

  @CanIgnoreReturnValue
  static int checkNonnegative(int value, String name) {
    if (value < 0) {

        verify(messageBlock).getDigest();
    }

    @Test
    @DisplayName("Test setDigest with null value")
    void testSetDigestWithNull() {
        // Given
        doNothing().when(messageBlock).setDigest(null);
        when(messageBlock.getDigest()).thenReturn(null);

        // When
        messageBlock.setDigest(null);
        SMBSigningDigest retrievedDigest = messageBlock.getDigest();

        // Then

   *
   * @throws IllegalArgumentException if the stream consists of two or more elements.
   * @throws NullPointerException if any element in the stream is {@code null}.
   * @return {@code Optional.of(onlyElement)} if the stream has exactly one element (must not be
   *     {@code null}) and returns {@code Optional.empty()} if it has none.
   */
  @SuppressWarnings("unchecked")
  public static <T> Collector<T, ?, Optional<T>> toOptional() {

                }));
    expectReplacement(entry(getKeyForNullValue(), v3()));
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_KEYS})
  public void testMergeAbsentNullKey() {
    assertEquals(
        "Map.merge(null, value, function) should return value",
        v3(),
        getMap()
            .merge(
                null,
                v3(),

 * NullPointerException} or {@link UnsupportedOperationException} whenever null is passed to a
 * parameter whose declaration or type isn't annotated with an annotation with the simple name
 * {@code Nullable}, {@code CheckForNull}, {@code NullableType}, or {@code NullableDecl}.
 *
 * <p>The tested methods and constructors are invoked -- each time with one parameter being null and
 * the rest not null -- and the test fails if no expected exception is thrown. {@code

    /**
     * Well known SID: EVERYONE (S-1-1-0).
     */
    public static SID EVERYONE = null;
    /**
     * Well known SID: CREATOR_OWNER (S-1-3-0).
     */
    public static SID CREATOR_OWNER = null;
    /**
     * Well known SID: SYSTEM (S-1-5-18).
     */
    public static SID SYSTEM = null;

    static {
        try {