When creating a JS XPCOM Service can classID be random?

Question

When I create a JS XPCOM service the guid that is used for the classID can just be a randomly generated string correct? following directions here?

I ask because I'm forking another project and changed this to a another randomly generated value, and I believe I changed the classDescription, and contractID correctly as well, but I'm not having any success. So I just wanted to check that my understanding is correct.

Answer 1

I just created a new addon and a new service to test out my assumption, and you can use a random guid created from a site like this.