Looking for an alternative to LuceneContext.builder()

[bachlge]

GigaMap Lucene Advanced Usage Documentation refers to LuceneContext.builder() which seems not to be available anymore in EclipseStore 4.1

This code from the documentation cannot be used anymore:

// Create context with auto-commit disabled
LuceneContext<Product> context = LuceneContext.builder()
    .directoryCreator(DirectoryCreator.MMap(indexPath))
    .documentPopulator(new ProductDocumentPopulator())
    .autoCommit(false)
    .build();

How can I set autoCommit to false in the current version? (and set it back to true after the bulk-operation)
Ideally at runtime, without building the context anew?