private void closeKey(Integer handle) {
		if (METHOD_CLOSE_KEY == null) {
			METHOD_CLOSE_KEY = getMethod(mRoot.getClass(), "WindowsRegCloseKey", int.class);
		}
		try {
			METHOD_CLOSE_KEY.invoke(mRoot, new Object[] { handle });
		} catch (Exception exception) {
			Log.error(exception);
		}
	}