code: def __init__(self, mat_based_loss, **kwargs):
      super().__init__(**kwargs)
      self.loss_method = (
          self.mat_based_loss
          if mat_based_loss
          else self.pair_based_loss
      )
  
file_path: pytorch-metric-learning/src/pytorch_metric_learning/losses/generic_pair_loss.py
imports: import torch
  from ..utils import common_functions
  from ..utils import loss_and_miner_utils
  from .base_metric_loss_function import BaseMetricLossFunction
label_desc: Use image node_id 1 to create a new GenericPairLoss object from inherited base classes: BaseMetricLossFunction with example: obj = GenericPairLoss(mat_based_loss)