# Collect all nodes from the current `model`.
	private fun collect_model_nodes(model: Model): Collection[NeoNode] do
		for mpackage in model.mpackages do
			mpackage.to_node(nodes, model_name)
			for mgroup in mpackage.mgroups do mgroup.to_node(nodes, model_name)
		end
		return nodes.values
	end