code: def episode_reset(self):
      self.done_seen = False
      self.turn_count = 0
  
imports: from parlai.core.message import Message
  from parlai.core.metrics import Metric, AverageMetric
  from parlai.core.tod.tod_core import STANDARD_DONE
  from typing import Dict, List, Optional
label_desc: Use image node_id 1 for calling the UserGeneratedDoneMetricHandler obj's underlying member method code with example usage: obj.episode_reset() without return types