code: def get_config(self) -> Dict[str, Optional[str]]:
      return {
          "location": self._location,
          "default_namespace": self._default_namespace,
          "domain": self._domain,
          "base_path": self._base_path,
      }
  
imports: from typing import Dict, Optional, TypeVar, Union
  import os
  import json
  import logging
  from ..utils import first_extant_file
  from .user_config import get_user_config
label_desc: Use image node_id 2 for calling the DeployConfig obj's underlying member method code with example usage: obj.get_config() and returns: dict