code: def disconnect(self):
          
          if not self._connected:
              return
  
          log.info("Session: %s, Tree: %s - Disconnecting from Tree Connect"
                   % (self.session.username, self.share_name))
  
          req = SMB2TreeDisconnect()
          log.info("Session: %s, Tree: %s - Sending Tree Disconnect message"
                   % (self.session.username, self.share_name))
          log.debug(str(req))
          request = self.session.connection.send(req,
                                                 sid=self.session.session_id,
                                                 tid=self.tree_connect_id)
  
          log.info("Session: %s, Tree: %s - Receiving Tree Disconnect response"
                   % (self.session.username, self.share_name))
          res = self.session.connection.receive(request)
          res_disconnect = SMB2TreeDisconnect()
          res_disconnect.unpack(res['data'].get_value())
          log.debug(str(res_disconnect))
          self._connected = False
          del self.session.tree_connect_table[self.tree_connect_id]
docs: Disconnects the tree connection.