See also the comment of {TYPE_MARK}.declaration_type, because declaration_type_of_like_current
is actually the implementation of declaration_type for the "like Current" type mark.
Do Current get permission of other to use some feature?
Here, other is the name of some class in some exportation list and we are trying to
know if Current is allowed or not.
Note 1: we consider both "inherit" links and "insert" links as equivalent for exportations.
Note 2: we do not rely on the TYPE graph for exportation, first because the CLASS_TEXT
inherit/insert graph is smaller and because it is much more easy for generic classes.
See also the comment of {TYPE_MARK}.declaration_type, because declaration_type_of_like_current
is actually the implementation of declaration_type for the "like Current" type mark.