code: def reset(self):
          '''Reset stream.'''
          self._text = None
          self._markdown = False
          self._channel = Incoming.DEFAULT_CHANNEL
          self._attachments = []
  
          return self reset(self):
          '''Reset stream.'''
          self._text = None
          self._markdown = False
          self._channel = Incoming.DEFAULT_CHANNEL
          self._attachments = []
  
          return self
docs: Reset stream.