private void resetCell(ExtendedCell columnCell) {
    this.columnCell = columnCell;
    currentCount = 0;
  }
{@inheritDoc} This receives puts *and* deletes. Deletes do not count as a version, but rather
take the version of the previous put (so eventually all but the last can be reclaimed).
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/querymatcher/ScanWildcardColumnTracker.java