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
{
		return getStructureList( IMAGES_PROP );
	}
	/**
	 * Determines if the design has changed since it was last read from, or
	 * written to, the file. The dirty state reflects the action of the command
	 * stack. If the user saves the design and then changes it, the design is
	 * dirty. If the user then undoes the change, the design is no longer dirty.
	 * 
	 * @return <code>true</code> if the design has changed since the last load
	 *         or save; <code>false</code> if it has not changed.
	 */
	public boolean needsSave( )
	{
		return module.isDirty( );
	}
	/**
	 * Calls to inform a save is successful. Must be called after a successful
	 * completion of a save done using <code>serialize</code>.
	 */
	public void onSave( )
	{
		module.onSave( );
	}
	/**
	 * Removes a given validation listener. If the listener not registered, then
	 * the request is silently ignored.
	 * 
	 * @param listener
	 *            the listener to de-register