tree db843e8ca7f28aca2c8c4350e543dcdba21f818e
parent 3195f55ef4938069c349bbdeb75db5a2d36e7153
author Yuta HIGUCHI <y-higuchi@onlab.us> 1414213923 -0700
committer Yuta HIGUCHI <y-higuchi@onlab.us> 1414377895 -0700

add toString

Change-Id: I14b07972b1f0aec1a7cc21ff053aa30a25af8ca1