class_docstr: This meter is designed to measure the time between events and can be
  used to measure, for instance, the average processing time per batch of data.
  It is different from most other meters in terms of the methods it provides:
  
  Mmethods:
  
     * `reset()` resets the timer, setting the timer and unit counter to zero.
     * `value()` returns the time passed since the last `reset()`; divided by the counter value when `unit=true`.
code: def value(self):
      return time.time() - self.time
  
imports: import time
  from .None import meter
label_desc: Use image node_id 3 for calling the TimeMeter obj's underlying member method code with example usage: obj.value() and returns: unknown