code: def new_checker(flow):
      from . import cli_check, metadata_check
  
      CHECKER = {
          "CliCheck": cli_check.CliCheck,
          "MetadataCheck": metadata_check.MetadataCheck,
      }
      CLASSNAME = sys.argv[1]
      return CHECKER[CLASSNAME](flow)
  
imports: import sys
  import os
  from metaflow.exception import MetaflowException
  from metaflow import current
  from metaflow.cards import get_cards
  from metaflow.plugins.cards.exception import CardNotPresentException
label_desc: Use image node_id 12 for calling a global function with example usage: new_checker(flow) and returns: CHECKER