docs: private int slopSize(Versioned<Slop> slopVersioned) {
          int nBytes = 0;
          Slop slop = slopVersioned.getValue();
          nBytes += slop.getKey().length();
          nBytes += ((VectorClock) slopVersioned.getVersion()).sizeInBytes();
          switch(slop.getOperation()) {
              case PUT: {
                  nBytes += slop.getValue().length;
                  break;
              }
              case DELETE: {
                  break;
              }
              default:
                  logger.error("Unknown slop operation: " + slop.getOperation());
          }
          return nBytes;
      }