Class decorator declaring that this class must never be used as a ClassFactory fallback.
Applies an own, non-enumerable marker to the class prototype. Subclasses do NOT inherit the
marker for the purposes of ClassRequiresSubclass (see the own-property note above), which
is the point: a concrete subclass of a marked base is perfectly instantiable.
Class decorator declaring that this class must never be used as a ClassFactory fallback.
Applies an own, non-enumerable marker to the class prototype. Subclasses do NOT inherit the marker for the purposes of
ClassRequiresSubclass(see the own-property note above), which is the point: a concrete subclass of a marked base is perfectly instantiable.