code: def test_action_graph_service_init(
      in_mem_action_graph_service: ActionGraphService,
  ) -> None:
      assert isinstance(
          in_mem_action_graph_service.store, InMemoryActionGraphStore
      )
      assert isinstance(
          in_mem_action_graph_service.store.graph, NetworkXBackingStore
      )
  
imports: from syft.node.credentials import SyftSigningKey
  from syft.node.credentials import SyftVerifyKey
  from syft.node.worker import Worker
  from syft.service.action.action_graph import ExecutionStatus
  from syft.service.action.action_graph import InMemoryActionGraphStore
  from syft.service.action.action_graph import NetworkXBackingStore
  from syft.service.action.action_graph import NodeActionData
  from syft.service.action.action_graph import NodeActionDataUpdate
  from syft.service.action.action_graph import NodeType
  from syft.service.action.action_graph_service import ActionGraphService
  from syft.service.action.action_object import Action
  from syft.service.action.action_object import ActionObject
  from syft.service.context import AuthedServiceContext
  from syft.service.response import SyftError
  from syft.service.response import SyftSuccess
  from syft.types.datetime import DateTime
  from syft.types.uid import UID
label_desc: Use image node_id 1 for calling a global function with example usage: test_action_graph_service_init(in_mem_action_graph_service) without return types