Repository: huggingface/datasets
File: src/datasets/arrow_dataset.py (Python)

Code before:
    def to_json(
        self,
        path_or_buf: Union[PathLike, BinaryIO],
        batch_size: Optional[int] = None,
        num_proc: Optional[int] = None,
        storage_options: Optional[dict] = None,
        **to_json_kwargs,
    ) -> int:
        """Export the dataset to JSON Lines or JSON.

        Args:
            path_or_buf (`PathLike` or `FileOrBuffer`):
                Either a path to a file (e.g. `file.json`), a remote URI (e.g. `s3://my-bucket/file.json`),
                or a BinaryIO, where the dataset will be saved to in the specified format.
            batch_size (`int`, *optional*):
                Size of the batch to load in memory and write at once.
                Defaults to `datasets.config.DEFAULT_MAX_BATCH_SIZE`.
            num_proc (`int`, *optional*):
                Number of processes for multiprocessing. By default it doesn't
                use multiprocessing. `batch_size` in this case defaults to
                `datasets.config.DEFAULT_MAX_BATCH_SIZE` but feel free to make it 5x or 10x of the default
                value if you have sufficient compute power.
            storage_options (`dict`, *optional*):
                Key/value pairs to be passed on to the file-system backend, if any.

                <Added version="2.15.0"/>
            **to_json_kwargs (additional keyword arguments):
                Parameters to pass to pandas's [`pandas.DataFrame.to_json`](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_json.html).

                <Changed version="2.11.0">

                Now, `index` defaults to `False` if `orient` is `"split"` or `"table"`.

                If you would like to write the index, pass `index=True`.

                </Changed>

        Returns:
            `int`: The number of characters or bytes written.

        Example:

        ```py
        >>> ds.to_json("path/to/dataset/directory")
        ```
        """
        # Dynamic import to avoid circular dependency
        from .io.json import JsonDatasetWriter

        return JsonDatasetWriter(
            self,

Review comment (suggestion):
fix added version

```suggestion
                <Added version="2.19.0"/>
```

Code after:
            )

    def to_list(self) -> list:
        """Returns the dataset as a Python list.

        Returns:
            `list`

        Example:

        ```py
        >>> ds.to_list()
        ```
        """
        return query_table(
            table=self._data,
            key=slice(0, len(self)),
            indices=self._indices,
        ).to_pylist()

    def to_json(
        self,
        path_or_buf: Union[PathLike, BinaryIO],
        batch_size: Optional[int] = None,
        num_proc: Optional[int] = None,
        storage_options: Optional[dict] = None,
        **to_json_kwargs,
    ) -> int:
        """Export the dataset to JSON Lines or JSON.

        Args:
            path_or_buf (`PathLike` or `FileOrBuffer`):
                Either a path to a file (e.g. `file.json`), a remote URI (e.g. `hf://datasets/username/my_dataset_name/data.json`),
                or a BinaryIO, where the dataset will be saved to in the specified format.
            batch_size (`int`, *optional*):
                Size of the batch to load in memory and write at once.
                Defaults to `datasets.config.DEFAULT_MAX_BATCH_SIZE`.
            num_proc (`int`, *optional*):
                Number of processes for multiprocessing. By default it doesn't
                use multiprocessing. `batch_size` in this case defaults to
                `datasets.config.DEFAULT_MAX_BATCH_SIZE` but feel free to make it 5x or 10x of the default
                value if you have sufficient compute power.
            storage_options (`dict`, *optional*):
                Key/value pairs to be passed on to the file-system backend, if any.

                <Added version="2.19.0"/>
            **to_json_kwargs (additional keyword arguments):
                Parameters to pass to pandas's [`pandas.DataFrame.to_json`](https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.to_json.html).

                <Changed version="2.11.0">