Syntax check ~/.config/mimeapps.list

Is there a way of checking for syntax errors in ~/.config/mimeapps.list? Errors seem to be silently ignored: 1. I added fdsobojaba to the bottom of the file 2. I ran xdg-open on an existing file 3. There was no error in .xsession-errors How do I verify mimeapps.list? Or at worst, where is the definition of the file's format?