- * @p value can be NULL for disorder_eclient_get(),
- * disorder_eclient_get_global() and disorder_eclient_userinfo().
+ * @p error will be NULL on success. In this case @p value will be the result
+ * (which might be NULL for disorder_eclient_get(),
+ * disorder_eclient_get_global() and disorder_eclient_userinfo()).
+ *
+ * @p error will be non-NULL on failure. In this case @p value is always NULL.