I’m confused about how to get a handle for an existing Mutable Data. I see window.safeMutableData.newPublic is for creating a new one, and I think I was told this was also for accessing an existing one. But you still need to be able to check if it exists before accessing it with
newPublic, otherwise you’d create one and you don’t necessarily want to create it at this point.
So how is one to a) test if a public MD exists, or b) access it without creating it if it doesn’t in fact exist?