value = list.getHeader( ).accept( this, value );
BandDesign header = list.getHeader( ); if ( header != null ) { value = header.accept( this, value ); }
		public Object visitListing( ListingDesign list, Object value )		{			value = list.getHeader( ).accept( this, value );			for ( int i = 0; i < list.getGroupCount( ); i++ )			{				GroupDesign group = list.getGroup( i );				value = group.getHeader( ).accept( this, value );				value = group.getFooter( ).accept( this, value );			}			value = list.getDetail( ).accept( this, value );			list.getFooter( ).accept( this, value );			return null;		}