code: @Override
      public void prepareInjection(Element element, BeanDefinitionBuilder bean) {
          addPropertyValueFromElement("class", "applicationClass", element, bean);
          addPropertyValueFromElement("mountPoint", element, bean);
          addPropertyValueFromElement("applicationName", element, bean);
          bean.addPropertyValue("contextParams", InjectionParserUtil.retrieveContextParam(element));
          String injectionSource = element.getAttribute("injectionSource");
          if (injectionSource == null || injectionSource.isEmpty()) {
              bean.addPropertyValue("injectionSource", PaxWicketBeanInjectionSource.INJECTION_SOURCE_SPRING);
          } else {
              bean.addPropertyValue("injectionSource", injectionSource);
          }
      }
docs: {@inheritDoc}