code: def pairwise_distance(self, query_emb, ref_emb):
      raise NotImplementedError
  
file_path: pytorch-metric-learning/src/pytorch_metric_learning/distances/base_distance.py
imports: import torch
  from ..utils.module_with_records import ModuleWithRecords
label_desc: Use image node_id 4 for calling the BaseDistance obj's underlying member method code with example usage: obj.pairwise_distance(query_emb, ref_emb) without return types