@Override
  public Map<String, String> properties() {
    if (catalogProperties == null) {
      return icebergTable.properties();
    } else {
      return MixedFormatCatalogUtil.mergeCatalogPropertiesToTable(
          icebergTable.properties(), catalogProperties);
    }
  }
Basic implementation of {@link UnkeyedTable}, wrapping a {@link Table}.
amoro-format-iceberg/src/main/java/org/apache/amoro/table/BasicUnkeyedTable.java