tree 3b8a8ddec5f1e466f325f678ec67a74a8c324a93
parent 64ff13b415db441e8d7239922ef0dfbf612947f3
author Sho SHIMIZU <sshimizu@us.fujitsu.com> 1473267286 -0700
committer Gerrit Code Review <gerrit@onlab.us> 1473442530 +0000

Add comments describing immutability/mutability

Change-Id: I2fc947b3785c6edf1ad20eb432dafc1642781ca7