def build_train_loader(cls, cfg):
        """
        Returns:
            iterable
        It now calls :func:`fastreid.data.build_reid_train_loader`.
        Overwrite it if you'd like a different data loader.
        """
        logger = logging.getLogger(__name__)
        logger.info("Prepare training set")
        return build_reid_train_loader(cfg, combineall=cfg.DATASETS.COMBINEALL)

        Returns:
            iterable
        It now calls :func:`fastreid.data.build_reid_train_loader`.
        Overwrite it if you'd like a different data loader.
        
fastreid/engine/defaults.py