from_success_response (OpenID::SReg::Response)

    # File lib/openid/extensions/sreg.rb, line 245
          def self.from_success_response(success_response, signed_only = true)
            ns_uri = OpenID::get_sreg_ns(success_response.message)
            if signed_only
              args = success_response.get_signed_ns(ns_uri)
              return nil if args.nil? # No signed args, so fail
            else
              args = success_response.message.get_args(ns_uri)
            end
            args.reject!{|k,v| !DATA_FIELDS.member?(k) }
            new(args, ns_uri)
          end