code: def register_magic_parameters():
      from uuid import uuid4
  
      def uuid(key, request):
          if key == "new":
              return str(uuid4())
          else:
              raise KeyError
  
      def request(key, request):
          if key == "http_version":
              return request.scope["http_version"]
          else:
              raise KeyError
  
      return [
          ("request", request),
          ("uuid", uuid),
      ]
  
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 15 for calling a global function with example usage: register_magic_parameters() and returns: list, str, request