How to set HtmlSaveOptions to save html and resources to stream

We are trying to use  Aspose.PDF to load PDF from databases, convert it to HTML and render them to our web page. We want to if we can save both the document and the resource to stream since current example in the document of Aspose.PDF saves css and images to a local path. If it can be done, how to write the parameters of CustomResourceSavingStrategy, CustomCssSavingStrategy, and CustomStrategyOfCssUrlCreation.

Thanks!