private string GetLiteral()
{
var sb = new StringBuilder();
if (Settings.HasOptions(PatternOptions.CSharpLiteral))
sb.Append("@");
sb.Append('"');
if (_isMultiline)
sb.Append(Settings.NewLine);
sb.Append(GetPattern());
if (_isMultiline)
sb.Append(Settings.NewLine);
sb.Append('"');
return sb.ToString();
}