code: def wraplet_signature(app, what, name, obj, options, signature, return_annotation):
      
      try:
          wrapped = obj._raw_slave
      except AttributeError:
          return None
      else:
          slave_argspec = autodoc.getargspec(wrapped)
          slave_signature = autodoc.formatargspec(obj, *slave_argspec)
          return (slave_signature, return_annotation)
docs: have wrapplets use the signature of the slave