@Override
      public Result call(RegionObserver observer) throws IOException {
        return observer.preIncrementAfterRowLock(this, increment);
      }
Supports Coprocessor 'bypass'.
@param increment increment object
@return result to return to client if default operation should be bypassed, null otherwise
@throws IOException if an error occurred on the coprocessor
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.java