class_docstr: <<< Sunburst >>
  
  Sunburst graphs are composed of multiple layers of ring graphs.
  In terms of data structure, inner circle is the parent node of outer circle.
  Therefore, it can represent local and global proportions like pie charts and
  hierarchical relationships like rectangle tree graphs.
code: def add(
      self,
      series_name: str,
      data_pair: types.Sequence,
      *,
      center: types.Optional[types.Sequence] = None,
      radius: types.Optional[types.Sequence] = None,
      highlight_policy: str = "descendant",
      node_click: str = "rootToNode",
      sort_: types.Optional[types.JSFunc] = "desc",
      levels: types.Optional[types.Sequence] = None,
      label_opts: types.Label = opts.LabelOpts(),
      itemstyle_opts: types.ItemStyle = None,
  ):
      if not center:
          center = ["50%", "50%"]
      if not radius:
          radius = ["0%", "75%"]
  
      self.options.get("series").append(
          {
              "type": ChartType.SUNBURST,
              "name": series_name,
              "data": data_pair,
              "center": center,
              "radius": radius,
              "highlightPolicy": highlight_policy,
              "nodeClick": node_click,
              "sort": sort_,
              "levels": levels,
              "label": label_opts,
              "itemStyle": itemstyle_opts,
          }
      )
      return self
  
imports: from ...None import options
  from ...None import types
  from ...charts.chart import Chart
  from ...globals import ChartType
label_desc: Use image node_id 1 for calling the Sunburst obj's underlying member method code with example usage: obj.add(series_name, data_pair) and returns: self