code: def help(args: "Namespace"):
      """
      Lookup the usage of certain argument in Jina API.
  
      :param args: arguments coming from the CLI.
      """
      from jina_cli.lookup import lookup_and_print
  
      lookup_and_print(args.query.lower())
  
file_path: jina/jina_cli/api.py
imports: from typing import TYPE_CHECKING
  from jina.parsers.helper import _update_gateway_args
label_desc: Use image node_id 13 for calling a global function with example usage: help(args) without return types