// Helper to set private field 'tree'
    private static void setTree(SmbTreeConnection c, SmbTreeImpl tree) {
        try {
            Field f = SmbTreeConnection.class.getDeclaredField("tree");
            f.setAccessible(true);
            f.set(c, tree);
        } catch (Exception e) {
            throw new AssertionError(e);
        }
    }

    // Helper to set private flag 'treeAcquired'

    void serialVersionUID_hasExpectedValue() throws Exception {
        // Arrange
        Field f = SMBSignatureValidationException.class.getDeclaredField("serialVersionUID");
        f.setAccessible(true);

        // Act
        long value = (long) f.get(null);

        // Assert
        assertEquals(2283323396289696982L, value, "serialVersionUID should be stable");
    }

  private final Executor executor;

  private Subscriber(EventBus bus, Object target, Method method) {
    this.bus = bus;
    this.target = checkNotNull(target);
    this.method = method;
    method.setAccessible(true);

    this.executor = bus.executor();
  }

  /** Dispatches {@code event} to this subscriber using the proper executor. */
  final void dispatchEvent(Object event) {
    executor.execute(
        () -> {

     */
    private static Object getPrivateField(Object target, String name) {
        try {
            java.lang.reflect.Field f = target.getClass().getDeclaredField(name);
            f.setAccessible(true);
            return f.get(target);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

        Field field = target.getClass().getDeclaredField(fieldName);
        field.setAccessible(true);
        field.set(target, value);
    }

    private void setResponseAsReceived(Smb2NegotiateResponse resp) throws Exception {
        Method setReceivedMethod = ServerMessageBlock2Response.class.getDeclaredMethod("received");
        setReceivedMethod.setAccessible(true);
        setReceivedMethod.invoke(resp);
    }

    Class<?> sepFrqSystemLoaderC =
        sepLoader.loadClass(FinalizableReferenceQueue.SystemLoader.class.getName());
    Field disabled = sepFrqSystemLoaderC.getDeclaredField("disabled");
    disabled.setAccessible(true);
    disabled.set(null, true);

    // Now make a parallel FRQ and an associated FinalizableWeakReference to an object, in order to
    // exercise some classes from the parallel ClassLoader.

                try {
                    java.lang.reflect.Field propField = org.lastaflute.core.direction.ObjectiveConfig.class.getDeclaredField("prop");
                    propField.setAccessible(true);
                    propField.set(this, new org.dbflute.helper.jprop.ObjectiveProperties("test"));
                } catch (Exception e) {

     */
    private Object getFieldValue(Object obj, String fieldName) {
        try {
            Field field = SmbComWrite.class.getDeclaredField(fieldName);
            field.setAccessible(true);
            return field.get(obj);
        } catch (Exception e) {
            throw new RuntimeException("Failed to access field " + fieldName, e);
        }
    }

    /**

    private static void setField(Object target, String name, Object value) {
        try {
            Field f = findField(target.getClass(), name);
            f.setAccessible(true);
            f.set(target, value);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

        try {
            java.lang.reflect.Method method = obj.getClass().getDeclaredMethod(methodName, String.class);
            method.setAccessible(true);
            return (ClassificationMeta) method.invoke(obj, param);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }