class_docstr: A timer class that supports multiple named timers.
  A named timer can be used multiple times, in which case the average
  dt will be returned.
  A named timer cannot be started if it is already currently running.
  Use case: measuring execution of multiple code blocks.
code: def is_active(self, name=""):
      timer_data = self.timers.get(name, {})
      if "start" in timer_data:
          return True
      return False
  
file_path: NeMo/nemo/utils/timers.py
imports: import time
  import numpy
  import torch
label_desc: Use image node_id 8 for calling the NamedTimer obj's underlying member method code with example usage: obj.is_active(name) and returns: False, True