def halt(status=nil, body=nil)
      unless status.nil? || Integer === status
        body = status
        status = nil
      end
      response.status = status if status
      response.body = body if body
      throw :halt
    end
def halt(status=nil, body=nil)
      unless status.nil? || Integer === status
        body = status
        status = nil
      end
      response.status = status if status
      response.body = body if body
      throw :halt
    end
call-seq:
     halt(status=nil, body=nil)
     halt(body)