docs: public long countUsers(CmsRequestContext requestContext, CmsUserSearchParameters searchParams) throws CmsException {
  
          CmsDbContext dbc = m_dbContextFactory.getDbContext(requestContext);
          try {
              return m_driverManager.countUsers(dbc, searchParams);
          } catch (Exception e) {
              dbc.report(null, Messages.get().container(Messages.ERR_COUNT_USERS_0), e);
              return -1;
          } finally {
              dbc.clear();
          }
      }