public IndexVolume build() {
            return new IndexVolume(
                    id,
                    version,
                    createTimeMs,
                    createUser,
                    updateTimeMs,
                    updateUser,
                    path,
                    nodeName,
                    state,
                    bytesLimit,
                    bytesUsed,
                    bytesFree,
                    bytesTotal,
                    statusMs,
                    indexVolumeGroupId);
        }
@return The path the volume resides in. This may be a relative path in which case
it should be resolved relative to stroom.home before use.
stroom-core-shared/src/main/java/stroom/index/shared/IndexVolume.java