tree 438913c4e6db3ada4a97ccead433cf4826c6172c
parent eb2094ce24a329dee438870782a8940fbbdba4c4
author Alan Viverette <alanv@google.com> 1450374159 -0500
committer Alan Viverette <alanv@google.com> 1450374159 -0500

Handle null result from getVirtualChildAt()

Also adds final where the method was being called, adds Nullable
annotation to method, and updates docs.

Bug: 25985497
Change-Id: I847a8507f2e3970f1340cddf4abf8650dda22b35