code: def xmlparse(self, file):
          
          if self.CACHE_FULL_TEI is True:
              return self.get_or(
                  _cache_key("Nautilus", self.name, "File", "Tree", file.name),
                  super(ProtoNautilusCtsResolver, self).xmlparse, file
              )
          return super(ProtoNautilusCtsResolver, self).xmlparse(file)
docs: Parse a XML file
  
          :param file: Opened File
          :return: Tree