docs: def set_endTimestamp(self,etimestamp=None):
          """
          Set the end timestamp of the linguistic processor, set to None for the current time
          @type etimestamp: string
          @param etimestamp: version of the linguistic processor
          """
          if etimestamp is None:
              import time
              etimestamp = time.strftime('%Y-%m-%dT%H:%M:%S%Z')
          self.node.set('endTimestamp',etimestamp)