# File lib/aws/errors.rb, line 52
      def initialize req = nil, resp = nil, code = nil, message = nil
        if req.is_a?(String) or req.nil?
          super(req)
        else
          @http_request = req
          @http_response = resp
          @code = code
          include_error_type
          super(message || http_response.body)
        end
      end