@Override
  protected boolean isManagedSubTable(Identifier ident) {
    if (ident.namespace().length != 2) {
      return false;
    }
    return MixedTableStoreType.from(ident.name()) != null;
  }
build mixed-format catalog instance.

@param name spark catalog name
@param options catalog initialize options
@return mixed format spark catalog.
amoro-format-mixed/amoro-mixed-spark/amoro-mixed-spark-3-common/src/main/java/org/apache/amoro/spark/mixed/MixedSessionCatalogBase.java