docs: def short(self):
          '''Short-form of the unit title, excluding any unit date, as an instance
          of :class:`~eulxml.xmlmap.eadmap.UnitTitle` . Can be used with formatting
          anywhere the full form of the unittitle can be used.'''
          # if there is no unitdate to remove, just return the current object
          if not self.unitdate:
              return self
  
          # preserve any child elements (e.g., title or emph)
          # initialize a unittitle with a *copy* of the current node
          ut = UnitTitle(node=deepcopy(self.node))
          # remove the unitdate node and return
          ut.node.remove(ut.unitdate.node)
          return ut