@Override
  public <R extends Message> Map<byte[], R> batchCoprocessorService(
    MethodDescriptor methodDescriptor, Message request, byte[] startKey, byte[] endKey,
    R responsePrototype) throws ServiceException, Throwable {
    throw new UnsupportedOperationException();
  }
This call will NOT close the underlying region.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/RegionAsTable.java