Selector variants usable for global-constant references. Unlike class members,
a bare * already resolves to Type::Wildcard (an alias for mixed), so the
global-reference form only expresses prefix or suffix matches. Bare identifiers
in type positions remain class-like references — PHPDoc does not treat them as
constant references.
Represents an unresolved reference to a symbol or a class-like member.
These require context (e.g., symbol tables, codebase analysis) to be resolved
into a concrete type (TObject, TEnum, constant type, etc.).