code: def get_raw_import_values(self):  # pragma: no cover, deprecation
          
          properties = ['timeperiod_name', 'alias', 'use', 'register']
          res = {}
          for prop in properties:
              if hasattr(self, prop):
                  val = getattr(self, prop)
                  res[prop] = val
          # Now the unresolved one. The only way to get ride of same key things is to put
          # directly the full value as the key
          for other in self.unresolved:
              res[other] = ''
          return res
docs: Get some properties of timeperiod (timeperiod is a bit different
          from classic item)
  
          TODO: never called anywhere, still useful?
  
          :return: a dictionnary of some properties
          :rtype: dict