code: def test_nested_update(self):
      self.scatter.update(
          marker={
              "colorbar": {"title": {"font": {"family": "courier"}}}
          }
      )
      assert (
          self.scatter[
              ("marker", "colorbar", "title", "font", "family")
          ]
          == "courier"
      )
      d1, d2 = strip_dict_params(self.scatter, self.expected_nested)
      assert d1 == d2
  
imports: from unittest import TestCase
  import plotly.graph_objs
  from plotly.tests.utils import strip_dict_params
label_desc: Use image node_id 8 for calling the TestAssignmentPrimitive obj's underlying member method code with example usage: obj.test_nested_update() without return types