presto-main/src/main/java/io/prestosql/connector/informationschema/InformationSchemaHandleResolver.java/InformationSchemaHandleResolver/getTransactionHandleClass
class InformationSchemaHandleResolver:    @Override
    public Class<? extends ConnectorTransactionHandle> getTransactionHandleClass()
    {
        return InformationSchemaTransactionHandle.class;
    }