The above API reference link simply says:
“Extracts a container object from the document to work with formats that contain attachments, ZIP archives etc.”
What does “etc” cover? Is there a formal listing of formats that are supported?
We made the incorrect assumption that all formats that Aspose can handle will be supported by GroupDocs since it is handling all the low-level plumbing that we would have to do ourselves if we were to use Aspose directly.
Specifically for our project requirements whereby we have already purchased GroupDocs license, besides the ZIP archive format that is stated in the API documentation, we will also require support for 7-Zip (7z), PDF, and the various MS Office formats (i.e. to extract embedded documents).
Will GroupDocs eventually be updated to support the above formats (and beyond)?
OR do we need to switch to using Aspose instead??