# File lib/doorkeeper/config.rb, line 131
      def option(name, options = {})
        attribute = options[:as] || name
        attribute_builder = options[:builder_class]

        Builder.instance_eval do
          remove_method name if method_defined?(name)
          define_method name do |*args, &block|
            # TODO: is builder_class option being used?
            value = if attribute_builder
                      attribute_builder.new(&block).build
                    else
                      block ? block : args.first
                    end

            @config.instance_variable_set("@#{attribute}""@#{attribute}", value)
          end
        end

        define_method attribute do |*_args|
          if instance_variable_defined?("@#{attribute}""@#{attribute}")
            instance_variable_get("@#{attribute}""@#{attribute}")
          else
            options[:default]
          end
        end

        public attribute
      end