code: function getLargestCount(domain, type) {
      var retVal = 1;
  
      for (var i = 0; i < domain.length; i++) {
          retVal = Math.max(retVal, type === 'cnv' ? domain[i].cnv : domain[i].count);
      }
  
      return retVal;
  }
docs: Want to find the maximum value so we can label the axis and scale the bars accordingly.
  No need to make this function public.
  @returns {number}