def METHOD_NAME(self):
    """ Property that exposes a data loader for validation samples """
    root = os.path.join(self.images_dir, 'val')
    if not self._val_loader:
        val_set = torchvision.datasets.ImageFolder(root=root, transform=self.val_transforms)
        self._val_loader = torch_data.DataLoader(val_set, batch_size=self.batch_size, shuffle=False,
                                                 num_workers=self.num_workers, pin_memory=True)
    return self._val_loader