docs: public void createAndWatchRequestNode(final long clientHandle,
                                            final Connection c,
                                            SnapshotInitiationInfo snapInfo,
                                            boolean notifyChanges) throws ForwardClientException {
          boolean requestExists = false;
          final String requestId = createRequestNode(snapInfo);
          if (requestId == null) {
              requestExists = true;
          } else {
              if (!snapInfo.isTruncationRequest()) {
                  try {
                      registerUserSnapshotResponseWatch(requestId, clientHandle, c, notifyChanges);
                  } catch (Exception e) {
                      VoltDB.crashLocalVoltDB("Failed to register ZK watch on snapshot response", true, e);
                  }
              }
              else {
                  // need to construct a success response of some sort here to indicate the truncation attempt
                  // was successfully attempted
                  VoltTable result = SnapshotUtil.constructNodeResultsTable();
                  result.addRow(-1,
                          CoreUtils.getHostnameOrAddress(),
                          "",
                          "SUCCESS",
                          "SNAPSHOT REQUEST QUEUED");
                  final ClientResponseImpl resp =
                      new ClientResponseImpl(ClientResponseImpl.SUCCESS,
                              new VoltTable[] {result},
                              "User-requested truncation snapshot successfully queued for execution.",
                              clientHandle);
                  ByteBuffer buf = ByteBuffer.allocate(resp.getSerializedSize() + 4);
                  buf.putInt(buf.capacity() - 4);
                  resp.flattenToBuffer(buf).flip();
                  c.writeStream().enqueue(buf);
              }
          }
  
          if (requestExists) {
              VoltTable result = SnapshotUtil.constructNodeResultsTable();
              result.addRow(-1,
                      CoreUtils.getHostnameOrAddress(),
                      "",
                      "FAILURE",
                      "SNAPSHOT IN PROGRESS");
              throw new ForwardClientException("A request to perform a user snapshot already exists", result);
          }
      }