code: def show_graph(pipeline):
      gv = graph_visualizer.GraphVisualizer(pipeline.dag_repr)
      gv.show()
  
imports: import json
  from typing import Union, List, Dict, Any
  from towhee.runtime.time_profiler import TimeProfiler
  from towhee.tools.profilers import PerformanceProfiler
  from towhee.datacollection import DataCollection
  from towhee.utils.lazy_import import LazyImport
  from towhee.utils.log import engine_log
  from towhee.utils.serializer import TritonSerializer, TritonParser
label_desc: Use image node_id 1 for calling a global function with example usage: show_graph(pipeline) without return types