Pihrtsoft.Text.RegularExpressions.Linq.PatternBuilder.AppendIfAssert C# (CSharp) Method

        public void AppendIfAssert(object testContent, object trueContent, object falseContent)
        {
            if (testContent == null)
                throw new ArgumentNullException(nameof(testContent));

            if (trueContent == null)
                throw new ArgumentNullException(nameof(trueContent));

            AppendGroupStart();
            AppendDirect('(');

            if (_fBuilder)
                _builder.AddInfo(SyntaxKind.IfAssert);

            if (!Settings.HasOptions(PatternOptions.IfConditionWithoutAssertion))
                AppendDirect("?=");

            AppendGroupContent(testContent);
            AppendGroupEnd();

            RegexOptions currentOptions = CurrentOptions;

            _indentLevel++;

            if (falseContent == null)
            {
                Append(trueContent, GroupMode.None);
            }
            else
            {
                Append(trueContent);
                AppendOr(falseContent);
            }

            AppendGroupEnd();

            CurrentOptions = currentOptions;
        }

 internal override void AppendTo(PatternBuilder builder)
 {
     builder.AppendIfAssert(_testContent, _trueContent, _falseContent);
 }