class_docstr: Tracks the average time elapsed over multiple steps.
class_docstr_tok: ["Tracks","the","average","time","elapsed","over","multiple","steps","."]
code: def __init__(self):
      self._meters = collections.defaultdict(ValueMeter)
      self._marked_time = collections.defaultdict(float)
  
imports: import collections
  from concurrent import futures
  import contextlib
  import functools
  import time
  from typing import List, Union
  import jax
  from jax import tree_util
  import jax.numpy
  import numpy
  from scipy import interpolate
  from scipy.spatial import transform
  import tqdm
label_desc: Use image node_id 1 to create a new TimeTracker object  with example: obj = TimeTracker()