def add(self, instance, **kwargs):
        return self.session.add(instance, **kwargs)
database post save signal. Creates the database in the driver and creates a new credential.
dataset/ETHPy150Open lsbardel/python-stdnet/stdnet/odm/session.py/Transaction.add--crossover with--dataset/ETHPy150Open globocom/database-as-a-service/dbaas/logical/models.py/database_post_save