class_docstr: Request processor
code: def add_response_property(self, key: str, value: str) -> None:
      self._response_header[key] = value
  
imports: from typing import Dict, Optional, Tuple
label_desc: Use image node_id 6 for calling the RequestProcessor obj's underlying member method code with example usage: obj.add_response_property(key, value) without return types