docs: public String getParamBacklink() {
  
          if ((m_editorSessionInfo != null)
              && CmsStringUtil.isNotEmptyOrWhitespaceOnly(m_editorSessionInfo.getBackLink())) {
              m_paramBackLink = m_editorSessionInfo.getBackLink();
          }
          if (m_paramBackLink == null) {
              m_paramBackLink = "";
          }
          return m_paramBackLink;
      }