Detailed Information About A Module About what it imports

Hi,

I am looking for a way to what symbols are being employed in a module by “using X.Y.Z”

here is an example

module A
	export ff,aa
	function ff()
		"FF"
	end
	function aa()
		"AA"
	end
end

module B
	using B
	export cc
	function cc()
		ff()  * "CC"
	end
end

as you may see in the example above , the ff symbol is being used from the module A.

So i am looking for programmatical way to get that information.

Thanks