init init_anewexpr (
		n_kwnew: nullable TKwnew,
		n_type: nullable AType,
		n_qid: nullable AQid,
		n_args: nullable AExprs
	)
	do
		_n_kwnew = n_kwnew.as(not null)
		n_kwnew.parent = self
		_n_type = n_type.as(not null)
		n_type.parent = self
		_n_qid = n_qid
		if n_qid != null then n_qid.parent = self
		_n_args = n_args.as(not null)
		n_args.parent = self
	end