/* (non-Javadoc)
  * @see cn.com.rebirth.commons.io.stream.Streamable#writeTo(cn.com.rebirth.commons.io.stream.StreamOutput)
  */
 @Override
 public void writeTo(StreamOutput out) throws IOException {
   clusterName.writeTo(out);
   out.writeVInt(nodes.length);
   for (DiscoveryNode node : nodes) {
     node.writeTo(out);
   }
 }