docs: public List<CmsOrganizationalUnit> getOrganizationalUnits(CmsObject cms, String ouFqn, boolean includeChildren)
      throws CmsException {
  
          CmsOrganizationalUnit parent = readOrganizationalUnit(cms, ouFqn);
          return m_securityManager.getOrganizationalUnits(cms.getRequestContext(), parent, includeChildren);
      }