code: def add_pipers(self, pipers, *args, **kwargs):
          
          for piper in pipers:
              self.add_piper(piper, *args, **kwargs)
docs: Adds a sequence of ``Pipers`` instances to the ``Dagger`` in the 
          specified order. Takes optional arguments for ``Dagger.add_piper``.
          
          Arguments:
          
            - pipers(sequence of valid ``add_piper`` arguments) Sequence of 
              ``Pipers`` or valid ``Dagger.add_piper`` arguments to be added to 
              the ``Dagger`` in the left to right order.