We have been using Apose cells 18.9 and from the documentation, I saw we can import json data to excel using JsonLayoutOptions class. But this class is not available in aspose-cells-18.9.jar.
Is it something newly implemented post this release?
Yes, the API was introduced after the release of Aspose.Cells v19.3, so please upgrade to a newer versions (e.g Aspose.Cells v20.2 (latest)) if you want to take advantage of the features.