# File lib/openid/extensions/ax.rb, line 134
      def get_extension_args
        aliases = NamespaceMap.new
        required = []
        if_available = []
        ax_args = new_args 
        @requested_attributes.each{|type_uri, attribute|
          if attribute.ns_alias
            name = aliases.add_alias(type_uri, attribute.ns_alias)
          else
            name = aliases.add(type_uri)
          end
          if attribute.required
            required << name
          else
            if_available << name
          end
          if attribute.count != 1
            ax_args["count.#{name}"] = attribute.count.to_s
          end
          ax_args["type.#{name}"] = type_uri
        }

        unless required.empty?
          ax_args['required'] = required.join(',')
        end
        unless if_available.empty?
          ax_args['if_available'] = if_available.join(',')
        end
        return ax_args
      end