presto-iceberg/src/main/java/io/prestosql/plugin/iceberg/UnknownTableTypeException.java/UnknownTableTypeException/UnknownTableTypeException
class UnknownTableTypeException:    public UnknownTableTypeException(SchemaTableName tableName)
    {
        super(ICEBERG_UNKNOWN_TABLE_TYPE, "Not an Iceberg table: " + tableName);
        this.tableName = requireNonNull(tableName, "tableName is null");
    }