+/**
+ * Get the list of devices/instances of the specified driver.
+ *
+ * @param driver The driver to use. Must not be NULL.
+ *
+ * @return The list of devices/instances of this driver, or NULL upon errors
+ * or if the list is empty.
+ *
+ * @since 0.1.0 (but the API changed in 0.2.0)
+ */