code: def find_static_assets():
      warn(
          """To use the vega nbextension, you'll need to update
      the Jupyter notebook to version 4.2 or later."""
      )
      return []
  
imports: from __future__ import absolute_import
  from warnings import warn
  from .vega import Vega
  from .vegalite import VegaLite
label_desc: Use image node_id 2 for calling a global function with example usage: find_static_assets() and returns: list