tree dd58519bca2aed4de70110dbb6fd16570bb30b59
parent 4dab561defddc0d4565ed23582c2ad2b78092171
author Sho SHIMIZU <sshimizu@us.fujitsu.com> 1456352233 -0800
committer Sho SHIMIZU <sshimizu@us.fujitsu.com> 1456357914 -0800

Make use of Optional more idiomatic

Change-Id: Ibe8f07a5de6b2927217cff5aeb29c6c103cd96ef