docs: void unlinkNode(int index, int lastLookup, int lookup) {
  
          // A VoltDB extension to diagnose ArrayOutOfBounds.
          voltDBhistory[voltDBhistoryDepth++ % voltDBhistoryCapacity] = -index-1;
          // End of VoltDB extension
          // unlink the node
          if (lastLookup == -1) {
              hashTable[index] = linkTable[lookup];
          } else {
              linkTable[lastLookup] = linkTable[lookup];
          }
  
          // add to reclaimed list
          linkTable[lookup]    = reclaimedNodePointer;
          reclaimedNodePointer = lookup;
  
          elementCount--;
      }