Bug 176450 Support link to CSS Feature(Model Part)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/elements/Theme.java
* @return an API handle for this element
	 */
	public ThemeHandle handle( Module module )
	{
		if ( handle == null )
		{
			handle = new ThemeHandle( module, this );
		}
		return (ThemeHandle) handle;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.core.DesignElement#getSlot(int)
	 */
	public ContainerSlot getSlot( int slot )
	{
		assert ( slot == STYLES_SLOT );
		return slots[STYLES_SLOT];
	}
	/**
	 * Returns the style with the given name.
	 * 
	 * @param styleName
	 *            the style name
	 * @return the corresponding style
	 */
	public StyleElement findStyle( String styleName )
	{
		StyleElement style = null;