presto-main/src/main/java/io/prestosql/operator/index/IndexBuildDriverFactoryProvider.java/IndexBuildDriverFactoryProvider/createStreaming
class IndexBuildDriverFactoryProvider:    public DriverFactory createStreaming(PageBuffer pageBuffer, Page indexKeyTuple)
    {
        ImmutableList.Builder<OperatorFactory> operatorFactories = ImmutableList.<OperatorFactory>builder()
                .addAll(coreOperatorFactories);

        if (dynamicTupleFilterFactory.isPresent()) {
            // Bind in a dynamic tuple filter if necessary
            operatorFactories.add(dynamicTupleFilterFactory.get().filterWithTuple(indexKeyTuple));
        }

        operatorFactories.add(new PageBufferOperatorFactory(outputOperatorId, planNodeId, pageBuffer));

        return new DriverFactory(pipelineId, inputDriver, false, operatorFactories.build(), OptionalInt.empty(), UNGROUPED_EXECUTION);
    }