code: public static Xml exports(LauncherConfig config)
      {
          Check.notNull(config);
  
          final Xml node = new Xml(NODE_LAUNCHER);
          node.writeInteger(ATT_RATE, config.getRate());
  
          for (final LaunchableConfig launchable : config.getLaunchables())
          {
              node.add(LaunchableConfig.exports(launchable));
          }
  
          return node;
      }
docs: Export the launcher node from config.
  
  @param config The config reference (must not be <code>null</code>).
  @return The launcher data.
  @throws LionEngineException If unable to read node.