nl_tokens: Gets the first sorter from the sorters collection excluding any groupers that may be in place
pl_tokens: function ( ) { var sorters = this . sorters . items , len = sorters . <mask> , i = 0 , sorter ; for ( ; i < len ; ++ i ) { sorter = sorters [ i ] ; if ( ! sorter . isGrouper ) { return sorter ; } } return null ; }