class_docstr: A `TrackerCallback` that terminates training when monitored quantity stops improving.
class_docstr_tok: ["A","`","TrackerCallback","`","that","terminates","training","when","monitored","quantity","stops","improving","."]
code: def before_fit(self):
      self.wait = 0
      super().before_fit()
  
imports: from __future__ import annotations
  from ..basics import *
  from .progress import *
  from .fp16 import MixedPrecision
label_desc: Use image node_id 2 for calling the EarlyStoppingCallback obj's underlying member method code with example usage: obj.before_fit() without return types