code: def neg_pair_reduction(self, *args, **kwargs):
      return self.tuple_reduction_helper(*args, **kwargs)
  
file_path: pytorch-metric-learning/src/pytorch_metric_learning/reducers/per_anchor_reducer.py
imports: import torch
  from ..utils import common_functions
  from .base_reducer import BaseReducer
  from .mean_reducer import MeanReducer
label_desc: Use image node_id 5 for calling the PerAnchorReducer obj's underlying member method code with example usage: obj.neg_pair_reduction() and returns: self