how to put bucket/object acl in request body by using sdk s3 interface?

[sunzen]

As for s3 PutBucketAcl interface, the reference says as following

You can use one of the following two ways to set a bucket's permissions:

• Specify the ACL in the request body
• Specify permissions using request headers

how to specify the ACL in the request body by using sdk interface? I have not found such information, and not figured it out. Any help is appreciated,