class_docstr: Create a choropleth with a timeslider for timestamped data.
  
  Visualize timestamped data, allowing users to view the choropleth at
  different timestamps using a slider.
  
  Parameters
  ----------
  data: str
      geojson string
  styledict: dict
      A dictionary where the keys are the geojson feature ids and the values are
      dicts of `{time: style_options_dict}`
  highlight: bool, default False
      Whether to show a visual effect on mouse hover and click.
  name : string, default None
      The name of the Layer, as it will appear in LayerControls.
  overlay : bool, default False
      Adds the layer as an optional overlay (True) or the base layer (False).
  control : bool, default True
      Whether the Layer will be included in LayerControls.
  show: bool, default True
      Whether the layer will be shown on opening.
  init_timestamp: int, default 0
      Initial time-stamp index on the slider. Must be in the range
      `[-L, L-1]`, where `L` is the maximum number of time stamps in
      `styledict`. For example, use `-1` to initialize the slider to the
      latest timestamp.
code: def __init__(
      self,
      data,
      styledict,
      highlight: bool = False,
      name=None,
      overlay=True,
      control=True,
      show=True,
      init_timestamp=0,
      stroke_opacity=1,
      stroke_width=0.8,
      stroke_color="#FFFFFF",
  ):
      super().__init__(
          name=name, overlay=overlay, control=control, show=show
      )
      self.data = GeoJson.process_data(GeoJson({}), data)
      self.highlight = highlight
  
      self.stroke_opacity = stroke_opacity
      self.stroke_width = stroke_width
      self.stroke_color = stroke_color
  
      if not isinstance(styledict, dict):
          raise ValueError(
              f"styledict must be a dictionary, got {styledict!r}"
          )  # noqa
      for val in styledict.values():
          if not isinstance(val, dict):
              raise ValueError(
                  f"Each item in styledict must be a dictionary, got {val!r}"
              )  # noqa
  
      # Make set of timestamps.
      timestamps_set = set()
      for feature in styledict.values():
          timestamps_set.update(set(feature.keys()))
      try:
          timestamps = sorted(timestamps_set, key=int)
      except (TypeError, ValueError):
          timestamps = sorted(timestamps_set)
  
      self.timestamps = timestamps
      self.styledict = styledict
      assert (
          -len(timestamps) <= init_timestamp < len(timestamps)
      ), f"init_timestamp must be in the range [-{len(timestamps)}, {len(timestamps)}) but got {init_timestamp}"
      if init_timestamp < 0:
          init_timestamp = len(timestamps) + init_timestamp
      self.init_timestamp = init_timestamp
  
imports: from jinja2 import Template
  from folium.elements import JSCSSMixin
  from folium.features import GeoJson
  from folium.map import Layer
label_desc: Use image node_id 1 to create a new TimeSliderChoropleth object from inherited base classes: JSCSSMixin, Layer with example: obj = TimeSliderChoropleth(data, styledict, highlight, name, overlay, control, show, init_timestamp, stroke_opacity, stroke_width, stroke_color)