Does this support AppendFieldToKeyName (and maybe AppendListFieldToKeyName or AppendMatrixFieldToKeyName) with "range" parameter as well?
Let's say you have an index:
KeySegment(LangCode);
SubsetKeyBegin2(LangCode);
AppendFieldToKeyName(TutorialCode);
KeySegment(LangCode);
KeySegment(Heading);


Can I use range to specify TutorialCode or only LangCode?