docs: public void setUsersOrganizationalUnit(CmsObject cms, String ouFqn, String userName) throws CmsException {
  
          CmsOrganizationalUnit orgUnit = readOrganizationalUnit(cms, ouFqn);
          CmsUser user = cms.readUser(userName);
          m_securityManager.setUsersOrganizationalUnit(cms.getRequestContext(), orgUnit, user);
      }