code: function drawLabels() {
              let labelXPosition = isHorizontal ? _labelsHorizontalX : _labelsVerticalX;
              let labelYPosition = isHorizontal ? _labelsHorizontalY : _labelsVerticalY;
              let text = _labelsFormatValue
  
              if (labelEl) {
                  svg.selectAll('.percentage-label-group').remove();
              }
  
              labelEl = svg.select('.metadata-group')
                .append('g')
                  .classed('percentage-label-group', true)
                  .selectAll('text')
                  .data(data.reverse())
                  .enter()
                .append('text');
  
              labelEl
                  .classed('percentage-label', true)
                  .attr('x', labelXPosition)
                  .attr('y', labelYPosition)
                  .text(text)
                  .attr('font-size', labelsSize + 'px')
          }
docs: Draws labels at the end of each bar
  @private
  @return {void}