code: def help():
      """get help about how to use igel"""
      with click.Context(cli) as ctx:
          click.echo(cli.get_help(ctx))
  
imports: import logging
  import os
  import subprocess
  from pathlib import Path
  import click
  import igel
  import pandas
  from igel import Igel, metrics_dict
  from igel.constants import Constants
  from igel.servers import fastapi_server
  from igel.utils import print_models_overview, show_model_info, tableize
label_desc: Use image node_id 12 for calling a global function with example usage: help() without return types