Hmm. So we DO use `signature_id`. To be honest, I don't even know what one of these look like or what the point of them are. 

I mean, to a user (e.g. KaiRo) what use is it to see `nsBaseHashtableMT, nsILDAPOperation*  (53562)`
I don't see any purpose or point with the signature_id. Please enlighten me.