def is_split_downloaded(self, split):
        """Whether the given dataset split is downloaded.

        Args:
            split: the dataset split

        Returns:
            True/False
        """
        return (
            self.downloaded_splits is not None
            and split in self.downloaded_splits
        )
Whether the given dataset split is downloaded.

        Args:
            split: the dataset split

        Returns:
            True/False
        
fiftyone/zoo/datasets/__init__.py