code: private void doFind(final Message<JsonObject> message) {
      String type = message.body().getString("type");
      if (type != null) {
        switch (type) {
          case "group":
            doFindGroup(message);
            break;
          case "node":
            doFindNode(message);
            break;
          case "network":
            doFindNetwork(message);
            break;
          default:
            message.reply(new JsonObject().putString("status", "error").putString("message", "Invalid type specified."));
            break;
        }
      } else {
        message.reply(new JsonObject().putString("status", "error").putString("message", "No type specified."));
      }
    }
docs: Finds a node in the cluster.