SChunk.update_chunk# SChunk.update_chunk(nchunk, chunk)# Update an existing chunk in the SChunk. Parameters: nchunk¶ (int) – The position identifying the chunk that will be updated. chunk¶ (bytes object) – The new compressed chunk that will replace the content of the old one. Returns: out – The number of chunks in the SChunk. Return type: int Raises: RunTimeError – If some problem was detected.