@Override
    @Transactional(rollbackFor = Exception.class)
    public int createOrUpdate(final DashboardUserDTO dashboardUserDTO) {
        return StringUtils.isBlank(dashboardUserDTO.getId()) ? create(dashboardUserDTO) : update(dashboardUserDTO);
    }
create or update dashboard user.

@param dashboardUserDTO {@linkplain DashboardUserDTO}
@return rows
shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/DashboardUserServiceImpl.java