init init_aexterncodeblock (
		n_in_language: nullable AInLanguage,
		n_extern_code_segment: nullable TExternCodeSegment
	)
	do
		_n_in_language = n_in_language
		if n_in_language != null then n_in_language.parent = self
		_n_extern_code_segment = n_extern_code_segment.as(not null)
		n_extern_code_segment.parent = self
	end