safePublish
Follow the Java Memory Model and its final fields semantics when initializing and reading final fields.
The compiler would ensure that final field would be reachable in fully
innitialized state by other reads, by introducing synchronization primitives
on each it's access. Applies only to type immutable field mebers (vals)
Can be used either on single field or whole type if all of it's fields should be safetly published.