@Override
  public boolean isFormatOf(Table table) {
    return MixedFormatSparkUtil.isMixedIcebergTable(table);
  }
Mixed Iceberg format implementation of spark table format
amoro-format-mixed/amoro-mixed-spark/amoro-mixed-spark-3-common/src/main/java/org/apache/amoro/spark/mixed/MixedIcebergSparkFormat.java