<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def addcomment(self, order_increment_id, status, comment=None, notify=False):
 """ Add comment to order or change its state :param order_increment_id: Order ID TODO: Identify possible values for status """

        if comment is None:
            comment = ""
        return bool(self.call(
                'sales_order.addComment',
                [order_increment_id, status, comment, notify]
            )
        )