# Return a class named `name` visible by the module `mmodule`.
	# Visibility in modules is correctly handled.
	# If no such a class exists, then null is returned.
	# If more than one class exists, then an error on `anode` is displayed and null is returned.
	# FIXME: add a way to handle class name conflict
	fun try_get_mclass_by_name(anode: nullable ANode, mmodule: MModule, name: String): nullable MClass
	do
		var classes = model.get_mclasses_by_name(name)
		if classes == null then
			return null
		end

		var res: nullable MClass = null
		for mclass in classes do
			if not mmodule.in_importation <= mclass.intro_mmodule then continue
			if not mmodule.is_visible(mclass.intro_mmodule, mclass.visibility) then continue
			if res == null then
				res = mclass
			else
				error(anode, "Error: ambiguous class name `{name}`; conflict between `{mclass.full_name}` and `{res.full_name}`.")
				return null
			end
		end
		return res
	end