args := &DescribeRegionsArgs{
    // 输入你选择的地域,为空时查询所有地域的BBC域名列表
    Region:         "",
}
if res, err := bbcClient.DescribeRegions(args); err != nil {
    fmt.Println("list all region's endpoint information failed: ", err)
} else {
    fmt.Println("list all region's endpoint information success : ", res)
}