# File lib/aws/simple_workflow/decision_task.rb, line 450
      def start_timer start_to_fire_timeout, options = {}
        options[:timer_id] ||= UUIDTools::UUID.random_create.to_s
        options[:start_to_fire_timeout] = start_to_fire_timeout
        duration_opts(options, :start_to_fire_timeout)
        add_decision :start_timer, options
        options[:timer_id]
      end