Groovy as List Question

I ran across this bit of code and to me it seems like its not needed is there any reason to do the following

def answers = [] as List

instead of

def answers = []

In groovy I though开发者_如何学Pythont that [] was the empty list so there would be no need to have the as List

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No, there is no difference, both create an ArrayList and List (java.util.List) is an interface anyway.