code: def add_route(
      self,
      app: FastAPI,
      request_queue: Queue,
      responses_store: Dict[str, Any],
  ) -> None:
      # 1: Get the route associated with the http method.
      route = getattr(app, self.__class__.__name__.lower())
  
      self._unpatch_fast_api_request()
  
      # 2: Create a proxy function with the signature of the wrapped method.
      fn = deepcopy(_signature_proxy_function)
      fn.__annotations__ = self.method_annotations
      fn.__name__ = self.method_name
      setattr(fn, "__signature__", self.method_signature)
  
      # Note: Handle requests differently if attached to a flow.
      if not self.attached_to_flow:
          # 3: Define the request handler.
          @wraps(_signature_proxy_function)
          async def _handle_request(*args: Any, **kwargs: Any):
              if inspect.iscoroutinefunction(self.method):
                  return await self.method(*args, **kwargs)
              return self.method(*args, **kwargs)
  
      else:
          request_cls = (
              _CommandRequest
              if self.route.startswith("/command/")
              else _APIRequest
          )
  
          # 3: Define the request handler.
          @wraps(_signature_proxy_function)
          async def _handle_request(*args: Any, **kwargs: Any):
              async def fn(*args: Any, **kwargs: Any):
                  args, kwargs = apply_to_collection(
                      (args, kwargs), Request, _mock_fastapi_request
                  )
                  for k, v in kwargs.items():
                      if hasattr(v, "__await__"):
                          kwargs[k] = await v
  
                  request_id = str(uuid4()).split("-")[0]
                  logger.debug(
                      f"Processing request {request_id} for route: {self.route}"
                  )
                  request_queue.put(
                      request_cls(
                          name=self.component_name,
                          method_name=self.method_name,
                          args=args,
                          kwargs=kwargs,
                          id=request_id,
                      )
                  )
  
                  t0 = time.time()
                  while request_id not in responses_store:
                      await asyncio.sleep(0.01)
                      if (time.time() - t0) > self.timeout:
                          raise HTTPException(
                              status.HTTP_500_INTERNAL_SERVER_ERROR,
                              detail="The response was never received.",
                          )
  
                  logger.debug(
                      f"Processed request {request_id} for route: {self.route}"
                  )
  
                  return responses_store.pop(request_id)
  
              response: _RequestResponse = await asyncio.create_task(
                  fn(*args, **kwargs)
              )
  
              if response.status_code != 200:
                  raise HTTPException(
                      response.status_code, detail=response.content
                  )
  
              return response.content
  
      # 4: Register the user provided route to the Rest API.
      route(self.route, **self.kwargs)(_handle_request)
  
imports: import asyncio
  import inspect
  import time
  from copy import deepcopy
  from dataclasses import dataclass
  from functools import wraps
  from multiprocessing import Queue
  from typing import Any, Callable, Dict, List, Optional
  from uuid import uuid4
  from fastapi import FastAPI, HTTPException, Request, status
  from lightning_utilities.core.apply_func import apply_to_collection
  from lightning.app.api.request_types import _APIRequest, _CommandRequest, _RequestResponse
  from lightning.app.utilities.app_helpers import Logger
label_desc: Use image node_id 2 for calling the _HttpMethod obj's underlying member method code with example usage: obj.add_route(app, request_queue, responses_store) and returns: self, response, unknown, responses_store