def normalized_userinfo
      return nil unless self.userinfo
      return @normalized_userinfo if defined?(@normalized_userinfo)
      @normalized_userinfo ||= begin
        current_user = self.normalized_user
        current_password = self.normalized_password
        if !current_user && !current_password
          nil
        elsif current_user && current_password
          "#{current_user}:#{current_password}".dup
        elsif current_user && !current_password
          "#{current_user}".dup
        end
      end
      # All normalized values should be UTF-8
      if @normalized_userinfo
        @normalized_userinfo.force_encoding(Encoding::UTF_8)
      end
      @normalized_userinfo
    end
def normalized_userinfo
      return nil unless self.userinfo
      return @normalized_userinfo if defined?(@normalized_userinfo)
      @normalized_userinfo ||= begin
        current_user = self.normalized_user
        current_password = self.normalized_password
        if !current_user && !current_password
          nil
        elsif current_user && current_password
          "#{current_user}:#{current_password}".dup
        elsif current_user && !current_password
          "#{current_user}".dup
        end
      end
      # All normalized values should be UTF-8
      if @normalized_userinfo
        @normalized_userinfo.force_encoding(Encoding::UTF_8)
      end
      @normalized_userinfo
    end
The userinfo component for this URI, normalized.

 @return [String] The userinfo component, normalized.