docstr: :return: True is this config source is pointing to a valid location
docstr_tok: [":","return",":","True","is","this","config","source","is","pointing","to","a","valid","location"]
code: def available(self) -> bool:
      """
      :return: True is this config source is pointing to a valid location
      """
      ...
  
imports: import re
  from abc import abstractmethod
  from dataclasses import dataclass
  from typing import Dict, List, Optional
  from omegaconf import Container
  from hydra import version
  from hydra._internal.deprecation_warning import deprecation_warning
  from hydra.core.default_element import InputDefault
  from hydra.core.object_type import ObjectType
  from hydra.errors import HydraException
  from hydra.plugins.plugin import Plugin
label_desc: Use image node_id 7 for calling the ConfigSource obj's underlying member method code with example usage: obj.available() without return types