CERTCertificate *cert = STAN_GetCERTCertificate(c);
static PRBool instance_destructor(NSSCertificate *c, NSSToken *token){    CERTCertificate *cert = STAN_GetCERTCertificate(c);    remove_token_instance(c, token);    if (nssList_Count(c->object.instanceList) == 0) {	return PR_TRUE;    }    return PR_FALSE;}