code: def unpack(packed):
      
      func, args = serializer.loads(packed)
      result = func(*args)
      if isinstance(result, collections.Iterable):
          return list(result)
      return None
docs: Unpack the function and args then apply the function to the arguments and return result
      :param packed: input packed tuple of (func, args)
      :return: result of applying packed function on packed args