code: def sending_headers(self):
      return {"authorization": f"Bearer {self.token}"}
  
file_path: TabPy/tabpy/tabpy_server/handlers/basic_auth_server_middleware_factory.py
imports: import base64
  import secrets
  from pyarrow.flight import ServerMiddlewareFactory, ServerMiddleware
  from pyarrow.flight import FlightUnauthenticatedError
  from tabpy.tabpy_server.handlers.util import hash_password
label_desc: Use image node_id 2 for calling the BasicAuthServerMiddleware obj's underlying member method code with example usage: obj.sending_headers() and returns: dict