code: def total(self):
      return self.fn + self.fp + self.tn + self.tp
  
file_path: labml/helpers/labml_helpers/metrics/recall_precision.py
imports: import dataclasses
  import torch
  from labml import tracker
  from .None import Metric
label_desc: Use image node_id 2 for calling the RecallPrecisionState obj's underlying member method code with example usage: obj.total() and returns: unknown