We prepared some guidelines for those who’d like to try the new Open API of MPS 3.0 and experiment with custom persistence. You might have already tried the xmlPersistence sample project, which was bundled with the first release candidate. Now we added a step-by-step cookbook that uses the xmlPersistence sample project to show how custom persistence should be implemented. If this is something you’re into, check it out.
Develop with pleasure!
-JetBrains MPS Team