code: def inflate(self):
          
          if self.measurementParameters['accelerometerEnabled']:
              if len(self.data) == 0:
                  logger.info('Loading measurement data for ' + self.name)
                  self.data = {name: self._loadXYZ(name) for name, value in self.recordingDevices.items()}
              return True
          else:
              # TODO error handling
              return False
docs: loads the recording into memory and returns it as a Signal
          :return: