code: def handleEntity(self, ctxt):
          
          if ctxt is None: ctxt__o = None
          else: ctxt__o = ctxt._o
          libxml2mod.xmlHandleEntity(ctxt__o, self._o)
docs: Default handling of defined entities, when should we define
            a new input stream ? When do we just handle that as a set
             of chars ?  OBSOLETE: to be removed at some point.