+/**
+ * G_VOLUME_IDENTIFIER_KIND_CLASS:
+ *
+ * The string used to obtain the volume class with g_volume_get_identifier().
+ *
+ * Known volume classes include `device` and `network`. Other classes may
+ * be added in the future.
+ *
+ * This is intended to be used by applications to classify #GVolume
+ * instances into different sections - for example a file manager or
+ * file chooser can use this information to show `network` volumes under
+ * a "Network" heading and `device` volumes under a "Devices" heading.
+ */
+#define G_VOLUME_IDENTIFIER_KIND_CLASS "class"
+