H5P file management
I've been tampering with H5P's file management in h5p-php-editor-library, and it seems that information about media files consists of a path, a mime type and copyright information. Where's this structure defined? I managed to e.g. store additional information by adding fields to a file object inside h5peditor-av.js. I can see it inside the content.json file inside the H5P file that I can download. However it seems that this information isn't loaded or gets lost on its way back to the content type editor. Any hint will probably save me some time :-)