def METHOD_NAME(self, chunk_start, chunk_data):
    chunk_end = chunk_start + len(chunk_data) - 1
    self.file_service.update_range(
        self.share_name,
        self.directory_name,
        self.file_name,
        chunk_data,
        chunk_start,
        chunk_end,
        self.validate_content,
        timeout=self.timeout
    )
    range_id = 'bytes={0}-{1}'.format(chunk_start, chunk_end)
    self._update_progress(len(chunk_data))
    return range_id