Customize the primary key without using indexeddb's auto-increment primary key

[akirarika]

Hello, thank you for creating entity-db!

I am a beginner to entity-db. It seems that the primary key of entity-db is to use the autoincrement id of indexeddb. Is there any way to customize it? For example, I want to use doc: ${workspaceId}: ${userId}: ${randomStr} this custom string as the id, which can make code writing easier. Of course it may be because I don't know enough about entity-db.

If this is a stupid question, sorry to bother you!