code: def merged_dag_content(
      ep_proto: "EndpointProtocol",
      components: Dict[str, "ModelComponent"],
  ) -> "MergedJSON":
      init = _process_initial(ep_proto, components)
      dsk_connections = connections_from_components_map(components)
      epjson = endpoint_protocol_content(ep_proto)
  
      merged = {**init.merged_dsk, **init.payload_tasks_dsk}
      dependencies, _ = get_deps(merged)
      merged_proto = defaultdict(list)
      for task_name, task in merged.items():
          for parent in dependencies[task_name]:
              merged_proto[task_name].append(parent)
  
      for request_name, task_key in init.payload_dsk_map.items():
          cluster, *_ = task_key.split(".")
          merged_proto[task_key[: -len(".serial")]].append(task_key)
          merged_proto[task_key].append(request_name)
      merged_proto = dict(merged_proto)
  
      dependencies, dependents = get_deps(merged_proto)
      dependents = dict(dependents)
      functions_merged = valmap(functions_of, merged)
      function_names_merged = {
          k: tuple(map(funcname, v))
          for k, v in functions_merged.items()
      }
  
      return MergedJSON(
          dependencies=dependencies,
          dependents=dependents,
          funcnames=function_names_merged,
          connections=dsk_connections,
          endpoint=epjson,
      )
  
imports: from collections import defaultdict
  from dataclasses import dataclass
  from operator import attrgetter
  from typing import TYPE_CHECKING, Dict, List, Set, Tuple
  from flash.core.serve.dag.optimization import cull, functions_of, inline_functions
  from flash.core.serve.dag.rewrite import RewriteRule, RuleSet
  from flash.core.serve.dag.task import flatten, get_deps, getcycle, isdag, toposort
  from flash.core.serve.dag.utils import funcname
  from flash.core.utilities.imports import _CYTOOLZ_AVAILABLE, _PYDANTIC_AVAILABLE
label_desc: Use image node_id 6 for calling a global function with example usage: merged_dag_content(ep_proto, components) and returns: MergedJSON