Property definitions

nitc :: parser_prod $ AConcreteClasskind :: init_aconcreteclasskind
	init init_aconcreteclasskind (
		n_kwclass: nullable TKwclass
	)
	do
		_n_kwclass = n_kwclass.as(not null)
		n_kwclass.parent = self
	end
src/parser/parser_prod.nit:565,2--571,4