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.

def add_pipers(self, pipers, *args, **kwargs):
        """
        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.
            
        """
        for piper in pipers:
            self.add_piper(piper, *args, **kwargs)