/// <summary>Add the content of this element to 'sb'</summary>
protected override void GenerateContent(StringBuilder sb, int indent)
{
base.GenerateContent(sb, indent);
var tabs = NewLine.HasValue() && indent >= 0 ? indent : 0;
foreach (var x in Defs)
{
x.GenerateContent(sb, tabs, NewLine);
if (x != Defs.Back() && NewLine.HasValue())
{
sb.Append(NewLine).Append('\t', indent >= 0 ? indent : 0);
}
}
}