docs: def sync_status(self):
          """Synchronize DOI status DataCite MDS.
  
          :returns: `True` if is sync successfully.
          """
          status = None
  
          try:
              try:
                  self.api.doi_get(self.pid.pid_value)
                  status = PIDStatus.REGISTERED
              except DataCiteGoneError:
                  status = PIDStatus.DELETED
              except DataCiteNoContentError:
                  status = PIDStatus.REGISTERED
              except DataCiteNotFoundError:
                  pass
  
              if status is None:
                  try:
                      self.api.metadata_get(self.pid.pid_value)
                      status = PIDStatus.RESERVED
                  except DataCiteGoneError:
                      status = PIDStatus.DELETED
                  except DataCiteNoContentError:
                      status = PIDStatus.REGISTERED
                  except DataCiteNotFoundError:
                      pass
          except (DataCiteError, HttpError):
              logger.exception("Failed to sync status from DataCite",
                               extra=dict(pid=self.pid))
              raise
  
          if status is None:
              status = PIDStatus.NEW
  
          self.pid.sync_status(status)
  
          logger.info("Successfully synced status from DataCite",
                      extra=dict(pid=self.pid))
          return True