Sorta dumb simple question here. I am converting a bunch of classes to dagster jobs and ops. I have some classes that instantiate a bunch of variables as part of the init in the class, and then functions manipulate the vars as it loops through the functions eventually getting to a final output before updating a database. So for example one function might run 100 times and return self.var +=1, so the class variable would be 100 after running. Is there an easy way to convert something like that between ops? Should I put these vars in to the context, or use a chart. What is a good way to achieve this?