docs: public CmsUser loginUser(CmsRequestContext context, String username, String password, String remoteAddress)
      throws CmsException {
  
          CmsDbContext dbc = m_dbContextFactory.getDbContext(context);
          CmsUser result = null;
          try {
              result = m_driverManager.loginUser(
                  dbc,
                  CmsOrganizationalUnit.removeLeadingSeparator(username),
                  password,
                  remoteAddress);
          } finally {
              dbc.clear();
          }
          return result;
      }