code: def result(self):
      # calculate accuracy
      preds, labels = self.stack(self.pred_list, self.label_list)
      accuracy = self.metric(labels, preds)
      return self.to_scalar(accuracy)
  
imports: from ..core import BaseINCMetric
  import tensorflow
label_desc: Use image node_id 2 for calling the TensorflowINCMetric obj's underlying member method code with example usage: obj.result() and returns: self