# File provisioningapi.rb, line 507
                def add_owner_to_group(email_address, group_id)
                        msg = RequestMessage.new
                        msg.about_owner(email_address)
                        response  = request(:ownership_add, group_id+'/owner', @headers, msg.to_s)
                        owner_entry = OwnerEntry.new(response.elements["entry"])
                end