* {@link ServerMessageBlock} superclass to {@link ServerMessageBlock#SMB_COM_CLOSE}.
     */
    @Test
    @DisplayName("happy: constructor sets command correctly")
    void testConstructorSetsCommand() {
        SmbComClose close = new SmbComClose(1, 12345L);
        assertEquals(SMB_COM_CLOSE, close.command, "command should be SMB_COM_CLOSE after construction");
    }

    /**