function(){
        var sorters = this.sorters.items,
            len = sorters.length,
            i = 0,
            sorter;
            
        for (; i < len; ++i) {
            sorter = sorters[i];
            if (!sorter.isGrouper) {
                return sorter;    
            }
        }
        return null;
    }
function(){
        var sorters = this.sorters.items,
            len = sorters.length,
            i = 0,
            sorter;
            
        for (; i < len; ++i) {
            sorter = sorters[i];
            if (!sorter.isGrouper) {
                return sorter;    
            }
        }
        return null;
    }
function ( ) { var sorters = this . sorters . items , len = sorters . length , i = 0 , sorter ; for ( ; i < len ; ++ i ) { sorter = sorters [ i ] ; if ( ! sorter . isGrouper ) { return sorter ; } } return null ; }
Gets the first sorter from the sorters collection, excluding
any groupers that may be in place
@protected
@return {Ext.util.Sorter} The sorter, null if none exist
Gets the first sorter from the sorters collection excluding any groupers that may be in place