init init_aexternclasskind (
		n_kwextern: nullable TKwextern,
		n_kwclass: nullable TKwclass
	)
	do
		_n_kwextern = n_kwextern.as(not null)
		n_kwextern.parent = self
		_n_kwclass = n_kwclass
		if n_kwclass != null then n_kwclass.parent = self
	end