*
   * @param element the element to add one occurrence of; may be null only if explicitly allowed by
   *     the implementation
   * @return {@code true} always, since this call is required to modify the multiset, unlike other
   *     {@link Collection} types
   * @throws NullPointerException if {@code element} is null and this implementation does not permit
   *     null elements

    results.add(serializer.submit(Callables.returning(null), manualExecutor));
    Future<?>[] thingToCancel = new Future<?>[1];
    results.add(
        serializer.submit(
            () -> {
              thingToCancel[0].cancel(false);
              return null;
            },
            directExecutor()));
    thingToCancel[0] = serializer.submit(Callables.returning(null), directExecutor());
    results.add(thingToCancel[0]);

           * can be used with collections that may contain null. This collection is a collection of
           * non-null Entry objects (Entry objects that might contain null values but are not
           * themselves null), so we can treat it as a plain `Object[]`.
           */
          @SuppressWarnings("nullness")
          Object[] result = standardToArray();

          return null;
        }
      };

  // Escapes everything except [a-zA-Z0-9]
  private static final UnicodeEscaper SIMPLE_ESCAPER =
      new UnicodeEscaper() {
        @Override
        protected char @Nullable [] escape(int cp) {
          return ('a' <= cp && cp <= 'z') || ('A' <= cp && cp <= 'Z') || ('0' <= cp && cp <= '9')
              ? null

    }

    /**
     * @return Required active profile identifiers, never {@code null}.
     */
    public Set<String> getRequiredActiveProfileIds() {
        return getProfileIds(pa -> !pa.optional() && pa.active());
    }

    /**
     * @return Optional active profile identifiers, never {@code null}.
     */
    public Set<String> getOptionalActiveProfileIds() {

    }
    return false;  // Fall back to oplock logic
}

public boolean canCacheWrite() {
    if (leaseKey != null) {
        LeaseEntry entry = leaseManager.getLease(leaseKey);
        return entry != null && entry.hasWriteCache();
    }
    return false;
}

public boolean canCacheHandle() {
    if (leaseKey != null) {

     *
     * @return true if initialized
     */
    public boolean isInitialized() {
        return markdownParser != null && htmlRenderer != null && htmlSanitizer != null;
    }

    }

    /**
     * Stops the log notification timer and performs a final flush.
     */
    @PreDestroy
    public void destroy() {
        if (timeoutTask != null) {
            timeoutTask.cancel();
        }
        if (logNotificationTarget != null) {
            logNotificationTarget.flush();
        }
    }

    /**

    void testResolve_NullRoot() throws SmbAuthException {
        // Scenario: The root is null.
        assertNull(dfsImpl.resolve(mockContext, "domain", null, "/path"));
    }

    @Test
    void testResolve_NullDomain() throws SmbAuthException {
        // Scenario: The domain is null.
        assertNull(dfsImpl.resolve(mockContext, null, "root", "/path"));
    }

    // Tests for cache
    @Test

            if (authenticator != null) {
                return authenticator.getResponse(responseType);
            }
        }
        return null;
    }

    /**
     * Performs logout operations for the specified user using SSO.
     *
     * @param user The user to logout
     * @return The logout URL from the SSO authenticator, or null if SSO is not available
     */