class_docstr: Injects secrets from environmental variables into the execution
  context.
class_docstr_tok: ["Injects","secrets","from","environmental","variables","into","the","execution","context","."]
code: def __new__(cls):
      if cls._instance is None:
          cls._instance = super(PluginSecretsResolver, cls).__new__(cls)
          cls._instance.client = _get_secrets_client()
      return cls._instance
  
imports: import logging
  import traceback
  import typing
  from typing import Optional
  from ..internal import secrets
label_desc: Use image node_id 1 for calling the PluginSecretsResolver obj's underlying member method code with example usage: obj.__new__(cls) and returns: cls