# Load PDF document
pdfDocument = pdf.Document("sample.pdf");

# Instantiate Epub Save options
options = pdf.EpubSaveOptions();

# Specify the layout for contents
options.content_recognition_mode = pdf.EpubSaveOptions.RecognitionMode.FLOW

# Save the ePUB document
pdfDocument.save("PDFToEPUB_out.epub", options);