code: def getDatabase(self):
      return self.__db
  
imports: from pyalgotrade.barfeed import dbfeed
  from pyalgotrade.barfeed import membf
  from pyalgotrade import bar
  from pyalgotrade.utils import dt
  import sqlite3
  import os
label_desc: Use image node_id 3 for calling the Feed obj's underlying member method code with example usage: obj.getDatabase() and returns: self