Get the details of an access grant from your S3 Access Grants instance.
See https://www.paws-r-sdk.com/docs/s3control_get_access_grant/ for full documentation.
s3control_get_access_grant(AccountId, AccessGrantId)
[required] The ID of the Amazon Web Services account that is making this request.
[required] The ID of the access grant. S3 Access Grants auto-generates this ID when you create the access grant.