code: private void addConfiguration(ConfigurableDescriptor configurableDescriptor, Xpp3Dom config, Store store) {
          if (null == config) {
              return;
          }
          MavenConfigurationDescriptor configDescriptor = store.create(MavenConfigurationDescriptor.class);
          configurableDescriptor.setConfiguration(configDescriptor);
          Xpp3Dom[] children = config.getChildren();
          for (Xpp3Dom child : children) {
              configDescriptor.getValues().add(getConfigChildNodes(child, store));
          }
      }
docs: Adds configuration information.
  
  @param configurableDescriptor
  The descriptor for the configured element (Plugin,
  PluginExecution).
  @param config
  The configuration information.
  @param store
  The database.