code: def register_facet_classes():
      return [DummyFacet]
  
imports: import asyncio
  from datasette import hookimpl, Permission
  from datasette.facets import Facet
  from datasette import tracer
  from datasette.utils import path_with_added_args
  from datasette.utils.asgi import asgi_send_json, Response
  import base64
  import pint
  import json
label_desc: Use image node_id 8 for calling a global function with example usage: register_facet_classes() and returns: list