You have to provide one `generator` per dataset in the dataset dictionary.
            keep_in_memory (`bool`, defaults to `False`):
                Keep the dataset in memory instead of writing it to a cache file.
            load_from_cache_file (`Optional[bool]`, defaults to `True` if caching is enabled):
                If a cache file storing the current computation from `function`
                can be identified, use it instead of recomputing.
            indices_cache_file_names (`Dict[str, str]`, *optional*):
                Provide the name of a path for the cache file. It is used to store the
                indices mappings instead of the automatically generated cache file name.
                You have to provide one `cache_file_name` per dataset in the dataset dictionary.
            writer_batch_size (`int`, defaults to `1000`):
                Number of rows per write operation for the cache file writer.