Bug 176450 Support link to CSS Feature(Model Part)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ModelUtil.java
return null;
		ArrayList returnList = new ArrayList( );
		for ( int i = 0; i < value.size( ); i++ )
		{
			DesignElement item = (DesignElement) value.get( i );
			returnList.add( getCopy( item ) );
		}
		return returnList;
	}
	/**
	 * Filtrates the table layout tasks.
	 * 
	 * @param tasks
	 *            the table layout tasks
	 * @return a list contained filtrated table layout tasks
	 */
	public static List filterLayoutTasks( List tasks )
	{
		List retList = new ArrayList( );
		Set elements = new LinkedHashSet( );
		for ( int i = 0; i < tasks.size( ); i++ )
		{
			RecordTask task = (RecordTask) tasks.get( i );
			if ( task instanceof LayoutRecordTask )
			{
				DesignElement compoundElement = (DesignElement) ( (LayoutRecordTask) task )
						.getTarget( );
				if ( !elements.contains( compoundElement ) )
				{
					retList.add( task );