code: @Override
      protected void extractRemainingMetaData(Element element, ParserContext context, MutableBeanMetadata beanMetadata)
          throws Exception {
          addPropertyValueFromElement("applicationName", element, context, beanMetadata);
          beanMetadata.addProperty("injectionSource",
              createStringValue(context, PaxWicketBeanInjectionSource.INJECTION_SOURCE_BLUEPRINT));
      }
docs: {@inheritDoc}