init init_aformaldef (
		n_id: nullable TClassid,
		n_type: nullable AType,
		n_annotations: nullable AAnnotations
	)
	do
		_n_id = n_id.as(not null)
		n_id.parent = self
		_n_type = n_type
		if n_type != null then n_type.parent = self
		_n_annotations = n_annotations
		if n_annotations != null then n_annotations.parent = self
	end