docs: private void sendDummyTakeMastershipResponse(long sourceHsid, long requestId, int partitionId, byte[] signatureBytes) {
          // msg type(1) + partition:int(4) + length:int(4) + signaturesBytes.length
          // requestId(8)
          int msgLen = 1 + 4 + 4 + signatureBytes.length + 8;
          ByteBuffer buf = ByteBuffer.allocate(msgLen);
          buf.put(ExportManager.TAKE_MASTERSHIP_RESPONSE);
          buf.putInt(partitionId);
          buf.putInt(signatureBytes.length);
          buf.put(signatureBytes);
          buf.putLong(requestId);
          BinaryPayloadMessage bpm = new BinaryPayloadMessage(new byte[0], buf.array());
          m_mbox.send(sourceHsid, bpm);
          if (exportLog.isDebugEnabled()) {
              exportLog.debug("Partition " + partitionId + " mailbox hsid (" +
                      CoreUtils.hsIdToString(m_mbox.getHSId()) +
                      ") send dummy TAKE_MASTERSHIP_RESPONSE message(" +
                      requestId + ") to " + CoreUtils.hsIdToString(sourceHsid));
          }
      }