code: def transform_serve_dag_to_serve_executor_dag(
      serve_dag_root_node: DAGNode,
  ):
      """Given a runnable serve dag with deployment init args and options
      processed, transform into an equivalent, but minimal dag optimized for
      execution.
      """
      if isinstance(serve_dag_root_node, DeploymentNode):
          return DeploymentExecutorNode(
              serve_dag_root_node._deployment_handle,
              serve_dag_root_node.get_args(),
              serve_dag_root_node.get_kwargs(),
          )
      elif isinstance(serve_dag_root_node, DeploymentFunctionNode):
          return DeploymentFunctionExecutorNode(
              serve_dag_root_node._deployment_handle,
              serve_dag_root_node.get_args(),
              serve_dag_root_node.get_kwargs(),
              other_args_to_resolve=serve_dag_root_node.get_other_args_to_resolve(),
          )
      else:
          return serve_dag_root_node
  
imports: import inspect
  from collections import OrderedDict
  from typing import List
  from ray.dag import ClassNode, DAGNode
  from ray.dag.function_node import FunctionNode
  from ray.dag.utils import _DAGNodeNameGenerator
  from ray.experimental.gradio_utils import type_to_string
  from ray.serve._private.constants import RAY_SERVE_ENABLE_NEW_HANDLE_API, SERVE_DEFAULT_APP_NAME
  from ray.serve._private.deployment_executor_node import DeploymentExecutorNode
  from ray.serve._private.deployment_function_executor_node import DeploymentFunctionExecutorNode
  from ray.serve._private.deployment_function_node import DeploymentFunctionNode
  from ray.serve._private.deployment_node import DeploymentNode
  from ray.serve.deployment import Deployment, schema_to_deployment
  from ray.serve.handle import DeploymentHandle, RayServeHandle
  from ray.serve.schema import DeploymentSchema
label_desc: Use image node_id 5 for calling a global function with example usage: transform_serve_dag_to_serve_executor_dag(serve_dag_root_node) and returns: DeploymentExecutorNode, DeploymentFunctionExecutorNode, serve_dag_root_node