class_docstr: Context stores model relevant worker information
  Some fixed during load times and some set by the service
code: def set_response_header(self, idx, key, value):
      self._request_processor[idx].add_response_property(key, value)
  
imports: from typing import Dict, Optional, Tuple
label_desc: Use image node_id 16 for calling the Context obj's underlying member method code with example usage: obj.set_response_header(idx, key, value) without return types