def loadSenderKey(self, senderKeyName):
        """
        :type senderKeyName: 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])
:type senderKeyName: SenderKeyName