private String convertVersionValueToVersion(long versionValue, Dataset.VersionSchema versionSchema) {
    String version;
    switch (versionSchema) {
      case TIMESTAMP:
      case MONOTONIC:
        version = Long.toString(versionValue);
        return version;
      case SEMANTIC:
        version = convertVersionToSemantic(versionValue);
        return version;
      case SEMANTIC_LONG:
        version = convertVersionToSemanticLong(versionValue);
        return version;
      default:
        throw new IllegalArgumentException("Unsupported version schema: " + versionSchema);
    }
  }
Convert version value from DB to string version.
@param versionValue the value of the version from DB.
@param versionSchema the {@link com.github.ambry.account.Dataset.VersionSchema} from dataset level.
@return the converted string format version.
ambry-account/src/main/java/com/github/ambry/account/mysql/DatasetDao.java