I am trying to create a universe for my pairs trading alpha model, and I would like to create a manual universe with several pairs of assets. Something like this:

symbols = [ [asset1A, asset1B], [asset2A, asset2B] ]
self.SetUniverseSelection( ManualUniverseSelectionModel(symbols) )

It looks like this is not working because the ManualUniverseSelectionModel is accepting a list of Symbol objects, not a list of lists. Is there any way to accomplish what I am trying to do?