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
*/
	public void setDefaultUnits( String units ) throws SemanticException
	{
		setStringProperty( UNITS_PROP, units );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.api.DesignElementHandle#getElement()
	 */
	public DesignElement getElement( )
	{
		return module;
	}
	/**
	 * Finds the handle to an element by a given element ID. Returns
	 * <code>null</code> if the ID is not valid, or if this session does not
	 * use IDs.
	 * 
	 * @param id
	 *            ID of the element to find
	 * @return A handle to the element, or <code>null</code> if the element
	 *         was not found or this session does not use IDs.
	 */
	public DesignElementHandle getElementByID( long id )
	{
		DesignElement element = module.getElementByID( id );
		if ( element == null )
			return null;
		return element.getHandle( module );