# `AStdClassdef` marked as serializable, itself or one of theur attribute
	private var auto_serializable_nclassdefs: Array[AStdClassdef] is lazy do
		var array = new Array[AStdClassdef]
		for nclassdef in n_classdefs do
			if nclassdef isa AStdClassdef and nclassdef.how_serialize != null then
				array.add nclassdef
			end
		end
		return array
	end