The extension allows to download ocmod xml files on the 'Modifications' page. It might be useful for seeing what is included to the code. Downloaded files can be edited and uploaded later to the store.
After installing the extension you will see a 'Download' button next to each extension on the 'Modifications' page.
IMPORTANT: it works for OCMOD files only. VQMOD files cannot be downloaded with this extension.
Here is a link to a video showing how to install and use the downloader: