 sectionHeader, seriesSelector, ...legendSection ]
                )
              );
            }
          });
        }

        toggleLegendSection(name) {
          let section = document.getElementById('legend-' + name);
          let geometry = this.pointHelpers[this.phIndexMap[name]].geometry;
          let isVisible = geometry.isVisible;

          if (isVisible) {
            geometry.hide();
            section.style.opacity = 0.5;
          } else {
            geometry.show();
            sect