def adjacent_tmp_file(path, **kwargs):
    # type: (str, **Any) -> Iterator[NamedTemporaryFileResult]
    """Return a file-like object pointing to a tmp file next to path.

    The file is created securely and is ensured to be written to disk
    after the context reaches its end.

    kwargs will be passed to tempfile.NamedTemporaryFile to control
    the way the temporary file will be opened.
    """
    with NamedTemporaryFile(
        delete=False,
        dir=os.path.dirname(path),
        prefix=os.path.basename(path),
        suffix='.tmp',
        **kwargs
    ) as f:
        result = cast('NamedTemporaryFileResult', f)
        try:
            yield result
        finally:
            result.file.flush()
            os.fsync(result.file.fileno())
Return a file-like object pointing to a tmp file next to path.

    The file is created securely and is ensured to be written to disk
    after the context reaches its end.

    kwargs will be passed to tempfile.NamedTemporaryFile to control
    the way the temporary file will be opened.
    
product/gradle-plugin/src/main/python/pip/_internal/utils/filesystem.py