I just found this issue ( https://github.com/supertokens/supertokens-core/issues/944 ) to work on but I don't seem to understand what figuring out storage in api layer here refers to . As far as I can understand the api layer probably refers to backend sdks interfacing the core or is it the interface between core and database being used and is function layer is the core . does storage layer refer to the database and where is this figuring out happening.