code: def triplet_reduction(self, losses, loss_indices, embeddings, labels):
      return self.element_reduction_helper(losses, embeddings)
  
file_path: pytorch-metric-learning/src/pytorch_metric_learning/reducers/threshold_reducer.py
imports: import torch
  from .base_reducer import BaseReducer
label_desc: Use image node_id 5 for calling the ThresholdReducer obj's underlying member method code with example usage: obj.triplet_reduction(losses, loss_indices, embeddings, labels) and returns: self