docs: public void setSortOption(String sortOption) {
  
          if (null != sortOption) {
              try {
                  m_sortOrder = CmsSimpleSearchConfigurationParser.SortOption.valueOf(sortOption);
              } catch (IllegalArgumentException e) {
                  m_sortOrder = null;
                  LOG.warn(
                      "Setting illegal default sort option " + sortOption + " failed. Using Solr's default sort option.");
              }
          } else {
              m_sortOrder = null;
          }
      }