Doubts about Ali Yun oss's temporary Authorization of sts

I have generated temporary credentials according to sdk

stdClass Object
(
    [RequestId] => 
    [AssumedRoleUser] => stdClass Object
        (
            [AssumedRoleId] => 
            [Arn] => 
        )

    [Credentials] => stdClass Object
        (
            [AccessKeySecret] => 
            [AccessKeyId] => 
            [Expiration] => 2018-10-01T07:44:30Z
            [SecurityToken] => 
        )

)

do you want to upload the generated AccessKeyId and AccessKeySecret now?

What is the use of the other information returned by