code: @Override
      public IPortletDefinition savePortletDefinition(IPortletDefinition portletDefinition) {
          Validate.notNull(portletDefinition, "portletDefinition can not be null");
          return this.portletDefinitionDao.savePortletDefinition(portletDefinition);
      }
docs: /* (non-Javadoc)
  @see org.apereo.portal.portlet.registry.IPortletDefinitionRegistry#savePortletDefinition(org.apereo.portal.portlet.om.IPortletDefinition)