code: def chain(self, wrapper, *args, **kwargs):
          
  
          if args or kwargs:
              wrapper = TendrilPartial(wrapper, *args, **kwargs)
  
          self._wrappers.append(wrapper)
  
          # For convenience...
          return self
docs: Add a wrapper to the chain.  Any extra positional or keyword
          arguments will be passed to that wrapper through construction
          of a ``TendrilPartial``.  For convenience, returns the
          WrapperChain object, allowing ``chain()`` to be called on the
          return result to register multiple wrappers.