code: def update(attr, old, new):
      l0.visible = 0 in checkbox.active
      l1.visible = 1 in checkbox.active
      l2.visible = 2 in checkbox.active
  
imports: import numpy
  from bokeh.io import curdoc
  from bokeh.layouts import row
  from bokeh.models import CheckboxGroup
  from bokeh.palettes import Viridis3
  from bokeh.plotting import figure
label_desc: Use image node_id 1 for calling a global function with example usage: update(attr, old, new) without return types