*
     * @param level the logging level to set
     */
    public static void setLevel(final int level) {
        LogStream.level = level;
    }

    /**
     * This must be called before <code>getInstance</code> is called or
     * it will have no effect.
     *
     * @param stream the PrintStream to use for logging
     */
    public static void setInstance(final PrintStream stream) {

      /* TODO: verify that the Collection is also synchronized? */
      return delegate.values();
    }

    @Override
    public Set<Cell<R, C, V>> cellSet() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.cellSet();
    }

    @Override
    public Map<R, V> column(C columnKey) {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.column(columnKey);
    }

    }

    @Test
    public void test_destroy() {
        // Initialize without container
        emptyGenerator = new EmptyGenerator();

        // Test that destroy method can be called without error
        emptyGenerator.destroy();
        // Call destroy multiple times to ensure it's safe
        emptyGenerator.destroy();
        emptyGenerator.destroy();
    }

    @Test

        // The super constructor is called with (domainHandle, 0, acct_flags, null, 0)
        // We can't directly assert these values on the superclass fields without reflection or a testable superclass.
        // For 100% coverage, we'd need to ensure the superclass constructor is indeed called with these values.

        // Create an NdrSmall object with a specific value
        NdrSmall ndrSmall = new NdrSmall(100);

        // Call the encode method
        ndrSmall.encode(mockNdrBuffer);

        // Verify that enc_ndr_small was called with the correct value
        verify(mockNdrBuffer, times(1)).enc_ndr_small(100);
        verifyNoMoreInteractions(mockNdrBuffer);
    }

    @Test
    void testDecode() throws NdrException {

            // Given - different values for caller available and actual free units
            ByteBuffer buffer = ByteBuffer.allocate(32);
            buffer.order(ByteOrder.LITTLE_ENDIAN);
            buffer.putLong(1000L); // Total allocation units
            buffer.putLong(500L); // Caller available allocation units

 *
 * @author Isaac Shum
 * @since 1.0
 */
@GwtCompatible
public final class Callables {
  private Callables() {}

  /** Creates a {@code Callable} which immediately returns a preset value each time it is called. */
  public static <T extends @Nullable Object> Callable<T> returning(@ParametricNullness T value) {
    return () -> value;
  }

  /**
   * Creates an {@link AsyncCallable} from a {@link Callable}.
   *

        // Verify that the super constructor was called with the correct arguments
        // Note: Mockito cannot directly verify super constructor calls.
        // We assume if the object is created, the super constructor was called.
        // We can verify the state of the object after construction.

        // Verify ptype and flags are set correctly

        // Should have created 4 indices (config x2, user x1, log x1)
        assertEquals(4, testClient.createdIndices.size());
        // Should have called addMapping for each created index
        assertEquals(4, testClient.addMappingCalls.size());
        // Should have called createAlias for each created index
        assertEquals(4, testClient.createAliasCalls.size());
        // No reindex calls since indices are new

     */
    InetAddress toInetAddress() throws UnknownHostException;

    /**
     * Guess called name to try for session establishment. These
     * methods are used by the smb package.
     *
     * @return guessed name
     */
    String firstCalledName();

    /**
     * Guess next called name to try for session establishment. These
     * methods are used by the smb package.
     *