code: def completion(args):
      """Generate command completion script.
  
      By default generates a completion script for the active shell. To
      specify a different shell, use `--shell`.
      """
  
      from . import completion_impl
  
      completion_impl.main(args)
  
label_desc: Use image node_id 1 for calling a global function with example usage: completion(args) without return types