@Override
      public void call(RegionObserver observer) throws IOException {
        observer.preGetOp(this, get, results);
      }
Supports Coprocessor 'bypass'.
@param get     the Get request
@param results What to return if return is true/'bypass'.
@return true if default processing should be bypassed.
@exception IOException Exception
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.java