My results:
maps := class():
ClassMap : [unique_class]string = map{}
OptionMap : [?int]string = map{}
ArrayMap : [[]unique_class]string = map{} # SAYS IT IS NOT IMPLEMENTED YET
MapMap : [[unique_class]unique_class]string = map{} # SAYS IT IS NOT IMPLEMENTED YET
TupleMap : [tuple(unique_class, unique_class)]string = map{} # SAYS IT IS NOT IMPLEMENTED YET
unique_class := class<unique>():