Bug 180089 BIRT model - TOC predefined styles
In ROM we need to support predefined styles for TOC too. This will allow user to easily create a TOC style, by creating one of two styles. Suggestion i have is - TOC ( Applies to all TOC nodes ) - TOC-level1 ( If defined applies to first level toc nodes ) - TOC-level2 ........... - TOC-level5
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/parser/ReportElementState.java
*            the content element
	 * @return true if the add was successful, false if an error occurred and a
	 *         semantic error was logged
	 */
	protected boolean addToSlot( DesignElement container, int slotID,
			DesignElement content )
	{
		
		if ( !checkContainer( container, slotID, content ) )
			return false;
		
		
		addToNamespace( content );
		Module module = handler.getModule( );
		
		
		long elementID = content.getID( );
		if ( elementID > 0 )
		{
			DesignElement element = module.getElementByID( elementID );
			
			assert element != content;
			if ( element == null )
				module.addElementID( content );
			else
			{
				handler
						.getErrorHandler( )
						.semanticError(
								new DesignParserException(