`AddressSpace` methods could use static dispatch

[rileyshahar]

I don't think we need dynamic dispatch for these methods, since they're only dealing with one DataSource at once. I think only the underlying storage of mappings needs to dynamically dispatch. Using generics in these methods will allow monomorphization, which is likely faster.

[dylanmc]

Dynamic dispatch in an operating system does sound like a bad idea, so I'm in agreement here.

[rileyshahar]

The current API does need to use dynamic dispatch for the linked list of DataSources in the MapType struct. Probably something to consider in our ultimate data structure deliberations.