# Return all classes named `name`.
	#
	# If such a class does not exist, null is returned
	# (instead of an empty array)
	#
	# Visibility or modules are not considered
	#
	# ~~~
	# var m = new ModelStandalone
	# assert m.get_mclasses_by_name("Object") == [m.mclass_o]
	# assert m.get_mclasses_by_name("Fail") == null
	# ~~~
	fun get_mclasses_by_name(name: String): nullable Array[MClass]
	do
		return mclasses_by_name.get_or_null(name)
	end