try {
            Constructor<SystemUtil> constructor = SystemUtil.class.getDeclaredConstructor();
            assertTrue("Constructor should be private", java.lang.reflect.Modifier.isPrivate(constructor.getModifiers()));

            // Test that constructor is accessible when made accessible
            constructor.setAccessible(true);
            SystemUtil instance = constructor.newInstance();

                assertTrue("Private append methods should be private: " + method.getName(),
                        java.lang.reflect.Modifier.isPrivate(method.getModifiers()));
            }
        }
    }

    public void test_multiple_instances() {
        SystemMonitorTarget target1 = new SystemMonitorTarget();

        try {
            Constructor<WebApiUtil> constructor = WebApiUtil.class.getDeclaredConstructor();
            assertTrue("Constructor should be private", java.lang.reflect.Modifier.isPrivate(constructor.getModifiers()));

            // Test that constructor is accessible when made accessible
            constructor.setAccessible(true);
            WebApiUtil instance = constructor.newInstance();

        try {
            Constructor<KuromojiCSVUtil> constructor = KuromojiCSVUtil.class.getDeclaredConstructor();
            assertTrue("Constructor should be private", java.lang.reflect.Modifier.isPrivate(constructor.getModifiers()));

            // Test that constructor is accessible when made accessible
            constructor.setAccessible(true);
            KuromojiCSVUtil instance = constructor.newInstance();

        assertNotNull(serialVersionField);
        assertTrue(Modifier.isStatic(serialVersionField.getModifiers()));
        assertTrue(Modifier.isFinal(serialVersionField.getModifiers()));
        assertTrue(Modifier.isPrivate(serialVersionField.getModifiers()));
        serialVersionField.setAccessible(true);
        assertEquals(1L, serialVersionField.getLong(null));
    }

    /**

    List<Invokable<?, ? extends T>> factories = new ArrayList<>();
    for (Method method : type.getRawType().getDeclaredMethods()) {
      Invokable<?, ?> invokable = type.method(method);
      if (!invokable.isPrivate()
          && !invokable.isSynthetic()
          && invokable.isStatic()
          && type.isSupertypeOf(invokable.getReturnType())) {
        @SuppressWarnings("unchecked") // guarded by isAssignableFrom()

    void testPrivateConstructor() throws Exception {
        // Verify constructor is private
        Constructor<Smb2Constants> constructor = Smb2Constants.class.getDeclaredConstructor();
        assertTrue(Modifier.isPrivate(constructor.getModifiers()), "Constructor should be private");

        // Force accessibility and create instance to achieve coverage
        constructor.setAccessible(true);

    List<Invokable<?, ? extends T>> factories = new ArrayList<>();
    for (Method method : type.getRawType().getDeclaredMethods()) {
      Invokable<?, ?> invokable = type.method(method);
      if (!invokable.isPrivate()
          && !invokable.isSynthetic()
          && invokable.isStatic()
          && type.isSupertypeOf(invokable.getReturnType())) {
        @SuppressWarnings("unchecked") // guarded by isAssignableFrom()

            assertDoesNotThrow(() -> {
                java.lang.reflect.Constructor<Strings> constructor = Strings.class.getDeclaredConstructor();
                assertTrue(java.lang.reflect.Modifier.isPrivate(constructor.getModifiers()), "Constructor should be private");
            }, "Should be able to access private constructor via reflection");
        }
    }

  }

  /** Visibility of any method or constructor. */
  public enum Visibility {
    PACKAGE {
      @Override
      boolean isVisible(int modifiers) {
        return !Modifier.isPrivate(modifiers);
      }
    },

    PROTECTED {
      @Override
      boolean isVisible(int modifiers) {
        return Modifier.isPublic(modifiers) || Modifier.isProtected(modifiers);
      }
    },