code: def test_custom_mouse_handling(self):
      fig = figure(mouse_handling="NONE")
      assert fig.mouse_handling == "NONE"
  
imports: import unittest
  import traitlets
  from ..figure import figure, Figure, FigureLayout
  from ..maps import Map
  from ..toolbar import Toolbar
  from ..errors_box import ErrorsBox
label_desc: Use image node_id 14 for calling the TestFigureFactory obj's underlying member method code with example usage: obj.test_custom_mouse_handling() without return types