code: def reset_for_step(self, step, val):
      self._expires = time.time() + self._timeout
      self._step = step
      self._val = val
  
imports: import time
  import warnings
  from guild import python_util
  from guild import util
  from guild.plugin import Plugin
label_desc: Use image node_id 3 for calling the SummaryCache obj's underlying member method code with example usage: obj.reset_for_step(step, val) without return types