code: def merge_graph_dict_directly_merge_in_last_deployment():
      return {
          "start-gateway": ["deployment0"],
          "deployment0": ["deployment1", "deployment2"],
          "deployment1": ["merger"],
          "deployment2": ["merger"],
          "merger": ["deployment_last"],
          "deployment_last": ["end-gateway"],
      }
  
imports: import asyncio
  import copy
  import multiprocessing
  import time
  from typing import Dict
  import pytest
  from docarray import Document, DocumentArray
  from jina.helper import random_port
  from jina.parsers import set_gateway_parser
  from jina.serve import networking
  from jina.serve.runtimes.asyncio import AsyncNewLoopRuntime
  from jina.serve.runtimes.gateway.request_handling import GatewayRequestHandler
  from jina.types.request.data import DataRequest
label_desc: Use image node_id 4 for calling a global function with example usage: merge_graph_dict_directly_merge_in_last_deployment() and returns: dict