Motivation:
As 5.7 has shipped we no longer need to keep these APIs in _NIOBeta.
We're going to do a two-stage removal: first we're going to move the
APIs to NIOCore and keep them in _NIOBeta with deprecations on them. In
a later release, we'll remove the APIs from _NIOBeta entirely.
Modifications:
- Move the TimeAmount + Duration APIs to NIOCore
- Deprecate the APIs in _NIOBeta.
Result:
We're on a path to remove _NIOBeta
Cory Benfield