code: func (l *Log) GetSessionChunk(namespace string, sid session.ID, offsetBytes, maxBytes int) ([]byte, error) {
  	return nil, nil
  }
docs: // GetSessionChunk returns a reader which can be used to read a byte stream
  // of a recorded session starting from 'offsetBytes' (pass 0 to start from the
  // beginning) up to maxBytes bytes.
  //
  // If maxBytes > MaxChunkBytes, it gets rounded down to MaxChunkBytes