tree 87ba9fe488f91c06adc46316cb65adec048a3f22
parent bf61f0a939101dc10a22c3c352bd4c1c0029e849
author Chuck Jazdzewski <chuckj@google.com> 1611787439 -0800
committer Chuck Jazdzewski <chuckj@google.com> 1611948246 -0800

Finialize API of Snapshot

Deprecates type aliases for lambdas in favor of using direct lambda
syntax.

Returns a function interface, UnregisterObserver, for unregistration
of observers.

Hids internal state record types from SnapshotStateList and
SnapshotStateMap.

Fixes: 178391749, 178490115, 178490321
Test: ./gradlew :compose:r:r:tDUT
Relnote: """Snapshot API was updated to be more consistent with
API guideline as well as hiding internal implementaiton classes
from the public API."""

Change-Id: Id9e32c885473f09cd69354a4c87a2c57c5f86533