code: def __call__(self, batch):
      if self.batch_aug_fn is not None:
          batch = self.batch_aug_fn(batch)
      return default_collate_fn(batch)
  
imports: import paddle
label_desc: Use image node_id 2 for calling the SegCollate obj's underlying member method code with example usage: obj.__call__(batch) and returns: default_collate_fn