code: def request_headers(self):
      """
      Generate context-specific request headers.
  
      :return: dict of request headers
      """
      pass
  
imports: from abc import ABCMeta, abstractmethod
  from mlflow.utils.annotations import developer_stable
label_desc: Use image node_id 2 for calling the RequestHeaderProvider obj's underlying member method code with example usage: obj.request_headers() without return types