protected TableCatalog tableCatalog(TableFormat format) {
    return tableCatalogs.computeIfAbsent(format, this::initializeTableCatalog);
  }
Unified catalog implement for spark engine.
amoro-format-mixed/amoro-mixed-spark/amoro-mixed-spark-3-common/src/main/java/org/apache/amoro/spark/SparkUnifiedCatalogBase.java