*
     * @return The global toolchains source or {@code null} if none.
     */
    Source getGlobalToolchainsSource();

    /**
     * Sets the global toolchains source. If both user toolchains and a global toolchains are given, the user toolchains
     * take precedence.
     *
     * @param globalToolchainsSource The global toolchains source, may be {@code null} to disable global toolchains.

 * whose next element can always be derived from the previous element. Null elements are not
 * supported, nor is the {@link #remove()} method.
 *
 * <p>Example:
 *
 * {@snippet :
 * Iterator<Integer> powersOfTwo =
 *     new AbstractSequentialIterator<Integer>(1) {
 *       protected Integer computeNext(Integer previous) {
 *         return (previous == 1 << 30) ? null : previous * 2;
 *       }
 *     };
 * }
 *

    /**
     * Gets the source from which the model was read.
     *
     * @return The source from which the model was read, never {@code null}.
     */
    @Nonnull
    ModelSource getSource();

    /**
     * Gets the file model.
     *
     * @return the file model, never {@code null}.
     */
    @Nonnull
    Model getFileModel();

    /**

        return key != null ? leases.get(key) : null;
    }

    /**
     * Handle a lease break notification
     *
     * @param key lease key
     * @param newState new lease state
     */
    public void handleLeaseBreak(Smb2LeaseKey key, int newState) {
        LeaseEntry entry = leases.get(key);
        if (entry != null) {

     */
    private Repository repository;

    /**
     * Creates a new exception with specified detail message and cause for the given repository.
     *
     * @param message The detail message, may be {@code null}.
     * @param repository The repository that caused the error, may be {@code null}.
     * @param cause The cause, may be {@code null}.
     */

        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

        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) {

  }

  public void testToString() {
    assertEquals("foo=1", entry("foo", 1).toString());
  }

  public void testToStringNull() {
    assertEquals("null=1", entry(NK, 1).toString());
    assertEquals("foo=null", entry("foo", NV).toString());
    assertEquals("null=null", entry(NK, NV).toString());
  }

  public void testEquals() {
    Entry<String, Integer> foo1 = entry("foo", 1);

            URLStreamHandler handler = PROTOCOL_HANDLERS.get(protocol);
            if (handler != null) {
                return handler;
            }
            if (factory != null) {
                handler = factory.createURLStreamHandler(protocol);
            }
            if (handler == null) {
                final String path = System.getProperty(HANDLER_PKGS_PROPERTY);

    assertThrows(NullPointerException.class, () -> table.put(null, 2, cellValue('d')));
    assertThrows(NullPointerException.class, () -> table.put("cat", null, cellValue('d')));
    if (supportsNullValues()) {
      assertThat(table.put("cat", 2, null)).isNull();
      assertTrue(table.contains("cat", 2));
    } else {
      assertThrows(NullPointerException.class, () -> table.put("cat", 2, null));
    }
    assertSize(3);
  }