code: def elapsed_time(self, end_event):
      assert isinstance(end_event, Event)
      return end_event.time - self.time
  
file_path: pytorch/benchmarks/sparse/utils.py
imports: import functools
  import operator
  import random
  import time
  import numpy
  import torch
label_desc: Use image node_id 3 for calling the Event obj's underlying member method code with example usage: obj.elapsed_time(end_event) and returns: unknown