Bug 145724 Change version after auto convert
By the request of 136536, user get warning message to confirm the auto convert. If user select yes, the file convert to newest format, but the version is still old. If user open this file again, he'll get the warning message even the file converted.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
*             thrown if the resource is not found, or there are syntax
	 *             errors in the resource
	 */
	public CssStyleSheetHandle openCssStyleSheet( String fileName )
			throws StyleSheetException
	{
		StyleSheetLoader loader = new StyleSheetLoader( );
		return loader.load( module, fileName ).handle( module );
	}
	/**
	 * Gets the result style sheet with given file name of an external CSS2
	 * resource.
	 * 
	 * @param is
	 *            the input stream of the resource
	 * @return the <code>CssStyleSheetHandle</code> if the external resource
	 *         is successfully loaded
	 * @throws StyleSheetException
	 *             thrown if the resource is not found, or there are syntax
	 *             errors in the resource
	 */
	public CssStyleSheetHandle openCssStyleSheet( InputStream is )
			throws StyleSheetException
	{
		StyleSheetLoader loader = new StyleSheetLoader( );
		return loader.load( module, is ).handle( module );
	}
	/**
	 * Imports the selected styles in a <code>CssStyleSheetHandle</code> to
	 * the module. Each in the list is instance of