code: def add_unique_template_variables(self, options):
          
          options.update(dict(
              colorStops=self.color_stops,
              colorDefault=self.color_default,
              radiusStops=self.radius_stops,
              clusterRadius=self.clusterRadius,
              clusterMaxZoom=self.clusterMaxZoom,
              strokeWidth=self.stroke_width,
              strokeColor=self.stroke_color,
              radiusDefault=self.radius_default,
              highlightColor=self.highlight_color
          ))
docs: Update map template variables specific to a clustered circle visual