code: protected String getPreDefOuFqn() {
  
          if (Boolean.valueOf(m_actionLogout).booleanValue() && (getRequest().getAttribute(PARAM_PREDEF_OUFQN) == null)) {
              String oufqn = getCmsObject().getRequestContext().getOuFqn();
              if (!oufqn.startsWith(CmsOrganizationalUnit.SEPARATOR)) {
                  oufqn = CmsOrganizationalUnit.SEPARATOR + oufqn;
              }
              getRequest().setAttribute(CmsLogin.PARAM_PREDEF_OUFQN, oufqn);
          }
          return (String)getRequest().getAttribute(PARAM_PREDEF_OUFQN);
      }
docs: Returns the predefined organizational unit fqn.<p>
  
  This is normally selected by url, and set by the {@link CmsWorkplaceLoginHandler}.<p>
  
  @return the predefined organizational unit fqn