A reference to a IList<T> intended to be passed between threads.
To resolve a thread-safe reference on a target Realm on a different thread, pass it to
public class List<T> : ThreadSafeReference
The type of the objects contained in the list.
A ThreadSafeReference object must be resolved at most once.
Failing to resolve a ThreadSafeReference will result in the source version of the Realm being pinned until the reference is deallocated.
Prefer short-lived ThreadSafeReferences as the data for the version of the source Realm will be retained until all references have been resolved or deallocated.