tags top-level property
A map of tags that RSP compiler uses to handle the tags.
The name of tag must start with a lower-case letter (a-z), and it can have only letters (a-z and A-Z).
Implementation
late Map<String, Tag> tags = (() {
final tags = HashMap<String, Tag>();
for (Tag tag in [PageTag(), DartTag(), HeaderTag(),
IncludeTag(), ForwardTag(), VarTag(),
JsonTag(), JsonJsTag(),
ForTag(), WhileTag(), IfTag(), ElseTag()])
tags[tag.name] = tag;
return tags;
})();