final ConfigurationListener listener)
            throws ComponentConfigurationException {
        final Object value = fromExpression(configuration, evaluator, type);
        if (type.isInstance(value)) {
            return value;
        }
        try {
            final Class<?> implType = getClassForImplementationHint(type, configuration, loader);

      }
      Thread.sleep(1);
    }
  }

  private static boolean isThreadBlockedOnInstanceOf(Thread t, Class<?> blocker) {
    return t.getState() == Thread.State.WAITING && blocker.isInstance(LockSupport.getBlocker(t));
  }

  static final class SlowChannel extends AbstractInterruptibleChannel {
    final CountDownLatch exitClose = new CountDownLatch(1);

    @Override

      }
      Thread.sleep(1);
    }
  }

  private static boolean isThreadBlockedOnInstanceOf(Thread t, Class<?> blocker) {
    return t.getState() == Thread.State.WAITING && blocker.isInstance(LockSupport.getBlocker(t));
  }

  static final class SlowChannel extends AbstractInterruptibleChannel {
    final CountDownLatch exitClose = new CountDownLatch(1);

    @Override

internal fun <T> readFieldOrNull(
  instance: Any,
  fieldType: Class<T>,
  fieldName: String,
): T? {
  var c: Class<*> = instance.javaClass
  while (c != Any::class.java) {
    try {
      val field = c.getDeclaredField(fieldName)
      field.isAccessible = true
      val value = field.get(instance)
      return if (!fieldType.isInstance(value)) null else fieldType.cast(value)

   */
  @GwtIncompatible // Class.cast, Class.isInstance
  public static <X extends Throwable> void throwIfInstanceOf(
      Throwable throwable, Class<X> declaredType) throws X {
    checkNotNull(throwable);
    if (declaredType.isInstance(throwable)) {
      throw declaredType.cast(throwable);
    }
  }

  /**
   * Propagates {@code throwable} exactly as-is, if and only if it is an instance of {@code
   * declaredType}. Example usage:

     * @return object cast to type
     * @throws PACDecodingException if types are incompatible
     */
    public static <T> T as(final Class<T> type, final Object object) throws PACDecodingException {
        if (!type.isInstance(object)) {
            throw new PACDecodingException("Incompatible object types " + type + " " + object.getClass());
        }

        return type.cast(object);
    }

    /**

              Class<Unsafe> k = Unsafe.class;
              for (Field f : k.getDeclaredFields()) {
                f.setAccessible(true);
                Object x = f.get(null);
                if (k.isInstance(x)) return k.cast(x);
              }
              throw new NoSuchFieldError("the Unsafe");
            }
          });
    } catch (PrivilegedActionException e) {

                  Class<Unsafe> k = Unsafe.class;
                  for (Field f : k.getDeclaredFields()) {
                    f.setAccessible(true);
                    Object x = f.get(null);
                    if (k.isInstance(x)) {
                      return k.cast(x);
                    }
                  }
                  throw new NoSuchFieldError("the Unsafe");
                });
      } catch (PrivilegedActionException e) {

                return mock(CIFSContext.class);
            }

            @Override
            public <T extends SmbTransport> T unwrap(Class<T> type) {
                if (type.isInstance(this)) {
                    return type.cast(this);
                }
                throw new ClassCastException("Cannot unwrap to " + type.getName());
            }

            @Override

              Class<Unsafe> k = Unsafe.class;
              for (Field f : k.getDeclaredFields()) {
                f.setAccessible(true);
                Object x = f.get(null);
                if (k.isInstance(x)) return k.cast(x);
              }
              throw new NoSuchFieldError("the Unsafe");
            }
          });
    } catch (PrivilegedActionException e) {