Circular references result in stackoverflow #1301
Description
Circular references in some places can result in a stackoverflow. We need to implement some check that this doesnt happen
Happens at least in
- [prod/VarDecl.xml] K2-InternalVariablesWithout-8
- [prod/VarDecl.xml] K2-InternalVariablesWithout-7
- [prod/VarDecl.xml] K2-InternalVariablesWithout-6