class_docstr: Custom Gunicorn application, required when integrating gunicorn as an API.
docstr: Pre-run initialization
docstr_tok: ["Pre-run","initialization"]
code: def init(self, parser, opts, args):
      """Pre-run initialization"""
  
file_path: orion/src/orion/core/cli/serve.py
imports: import argparse
  import logging
  from gunicorn.app.base import BaseApplication
  from orion.core.io import experiment_builder
  from orion.serving.webapi import WebApi
  from orion.storage.base import setup_storage
label_desc: Use image node_id 2 for calling the GunicornApp obj's underlying member method code with example usage: obj.init(parser, opts, args) without return types