}

        /**
         * Verifies that the isOpen method returns false for a closed handle.
         */
        @Test
        public void testIsOpen_ReturnsFalseWhenClosed() {
            when(smbPipeHandle.isOpen()).thenReturn(false);
            assertFalse(smbPipeHandle.isOpen(), "isOpen() should return false when the handle is closed.");
        }
    }

    /**