in scala-spark-sdk/src/main/scala/software/amazon/sagemaker/featurestore/sparksdk/helpers/FeatureGroupHelper.scala [136:140]
def isIcebergTableEnabled(describeResponse: DescribeFeatureGroupResponse): Boolean = {
val offlineStoreConfig = Option(describeResponse.offlineStoreConfig())
offlineStoreConfig.nonEmpty && TableFormat.ICEBERG.equals(offlineStoreConfig.get.tableFormat())
}