Bug 201368 Support "Not In" operator in filter list
Description: After we support "IN" filter we should also support the "Not In" filter. Data part has already support the "Not In" filter, so hope model can support that operator in the filter operator list. Regards!
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/CssCommand.java
}
		catch ( SemanticException e )
		{
			activityStack.rollback( );
			throw e;
		}
		
		activityStack.commit( );
	}
	/**
	 * Adds one css style in the module.
	 * 
	 * @param fileName
	 *            css file name
	 * @throws SemanticException
	 */
	private void doAddCss( IncludedCssStyleSheet css ) throws SemanticException
	{
		assert css != null;
		ElementPropertyDefn propDefn = element
				.getPropertyDefn( IReportDesignModel.CSSES_PROP );
		ComplexPropertyCommand propCommand = new ComplexPropertyCommand(
				module, element );
		propCommand.addItem( new CachedMemberRef( propDefn ), css );
	}
	/**
	 * Drops the given css style sheet.
	 * 
	 * @param sheet
	 *            css style sheet