class_docstr: Render links to external Javascript and CSS resources.
code: def render(self, **kwargs) -> None:
      figure = self.get_root()
      assert isinstance(
          figure, Figure
      ), "You cannot render this Element if it is not in a Figure."
  
      for name, url in self.default_js:
          figure.header.add_child(JavascriptLink(url), name=name)
  
      for name, url in self.default_css:
          figure.header.add_child(CssLink(url), name=name)
  
      super().render(**kwargs)
  
file_path: folium/folium/elements.py
imports: from typing import List, Tuple
  from branca.element import CssLink, Element, Figure, JavascriptLink, MacroElement
  from jinja2 import Template
label_desc: Use image node_id 1 for calling the JSCSSMixin obj's underlying member method code with example usage: obj.render() without return types