@Override
  public String factoryIdentifier() {
    return CatalogFactoryOptions.MIXED_HIVE_IDENTIFIER;
  }
The factory to create {@link MixedCatalog} with {@link
CatalogFactoryOptions#MIXED_HIVE_IDENTIFIER} identifier.
amoro-format-mixed/amoro-mixed-flink/amoro-mixed-flink-common/src/main/java/org/apache/amoro/flink/catalog/factories/mixed/MixedHiveCatalogFactory.java