code: def track_time(graph_name, format):
      device = utils.get_bench_device()
      graph = utils.get_graph(graph_name, format)
      graph = graph.to(device)
  
      # dry run
      for i in range(3):
          g = graph.add_self_loop()
  
      # timing
  
      with utils.Timer() as t:
          for i in range(3):
              edges = graph.add_self_loop()
  
      return t.elapsed_secs / 3
  
imports: import time
  import dgl
  import dgl.function
  import numpy
  import torch
  from ..None import utils
label_desc: Use image node_id 1 for calling a global function with example usage: track_time(graph_name, format) and returns: unknown