code: def reset(self):
      self.__nextPos = {}
      for instrument in self.__bars.keys():
          self.__nextPos.setdefault(instrument, 0)
      self.__currDateTime = None
      super(BarFeed, self).reset()
  
file_path: pyalgotrade/pyalgotrade/barfeed/membf.py
imports: import six
  from pyalgotrade import barfeed
  from pyalgotrade import bar
  from pyalgotrade import utils
label_desc: Use image node_id 2 for calling the BarFeed obj's underlying member method code with example usage: obj.reset() without return types