code: def elapsed(self):
      # return the total number of seconds between the start and
      # end interval
      return (self._end - self._start).total_seconds()
  
file_path: imutils/imutils/video/fps.py
imports: import datetime
label_desc: Use image node_id 5 for calling the FPS obj's underlying member method code with example usage: obj.elapsed() and returns: unknown