code: def loadSenderKey(self, senderKeyName):
          
          q = "SELECT record FROM sender_keys WHERE group_id = ? and sender_id = ?"
          cursor = self.dbConn.cursor()
          cursor.execute(q, (senderKeyName.getGroupId(), senderKeyName.getSender().getName()))
  
          result = cursor.fetchone()
          if not result:
              return SenderKeyRecord()
          return SenderKeyRecord(serialized = result[0])
docs: :type senderKeyName: SenderKeyName