public static StructLikeMap<Long> readBaseOptimizedTime(KeyedTable table) {
    return readWithLegacy(table.baseTable(), null, BLOB_TYPE_BASE_OPTIMIZED_TIME);
  }
Return the table root location of the mixed-format table.
amoro-format-iceberg/src/main/java/org/apache/amoro/utils/MixedTableUtil.java