Authn statement from sts, with subject field

http://yorkporc.files.wordpress.com/2013/04/image29.png shows sts output - with a subject in the authn statement. Using wif sdk and visual studio 2010, what does one do to the sts project (built from the template) to add the subject to the authn statement? Assume that I've added auth instant and authn method claims already, in get output claims callback.