I am creating pdfs using the pdfmake library to create reports for users. The report is created with a runtime objects and the file content is a blob object. I want the users to have the possibility to come back to the pdf at a later time and want to the save the object. When I persist the object, the blob object is saved as a cloud link, but when I use the link, an empty file returns. Do you have any experience with saving blobs in appfarm?