private static SegmentVersion getSegmentVersionToLoad( IndexLoadingConfigMetadata indexLoadingConfigMetadata) { if (indexLoadingConfigMetadata == null) { return SegmentVersion.fromStringOrDefault( CommonConstants.Server.DEFAULT_SEGMENT_FORMAT_VERSION); } String versionName = indexLoadingConfigMetadata.segmentVersionToLoad(); return SegmentVersion.fromStringOrDefault(versionName); }