Redmine

      end

      def deliver_twofa_paired

          @user,

          User.current,

          {

      end

      def deliver_twofa_unpaired

          @user,

          User.current,

          {

        Token.where(user_id: @user.id).find_token('twofa_backup_code', code).try(:delete)

        # make sure the user using the backup code is the same it's been issued to

        return false unless @user.present? && @user == user_from_code

          @user,

          User.current,

          {

          token.update_columns value: Redmine::Utils.random_hex(6)

          tokens << token

        end

          @user,

          User.current,

          {