code: def pos_pair_reduction(
      self, losses, loss_indices, embeddings, labels
  ):
      raise NotImplementedError
  
imports: import torch
  from ..utils import common_functions
  from ..utils.module_with_records import ModuleWithRecords
label_desc: Use image node_id 7 for calling the BaseReducer obj's underlying member method code with example usage: obj.pos_pair_reduction(losses, loss_indices, embeddings, labels) without return types