# File lib/serverspec/type/service.rb, line 16
      def running?(under)
        if under
          check_method = "check_running_under_#{under}".to_sym

          unless commands.respond_to?(check_method)
            raise ArgumentError.new("`be_running` matcher doesn't support #{under}")
          end

          backend.send(check_method, @name)
        else
          backend.check_running(@name)
        end
      end