tree 3e7370761520b66203cdbc8b00b8d7ce08bbf795
parent dd8d7ad75088096af8aa70eaf6005c6bb6d798c2
author David Pursehouse <dpursehouse@collab.net> 1479177355 -0800
committer David Pursehouse <dpursehouse@collab.net> 1484095553 +0900

Replace Guava's Optional with native Java 8 Optional

Change-Id: I913158eda2423de103367bf3067b8ce44f90fd9c