Renders the HTML representation of the element.

def render(self, **kwargs):
        """Renders the HTML representation of the element."""
        for item in self._parent._children.values():
            if not isinstance(item, Layer) or not item.control:
                continue
            key = item.layer_name
            if not item.overlay:
                self.base_layers[key] = item.get_name()
                if len(self.base_layers) > 1:
                    self.layers_untoggle[key] = item.get_name()
            else:
                self.overlays[key] = item.get_name()
                if not item.show:
                    self.layers_untoggle[key] = item.get_name()
        super(LayerControl, self).render()