+
+ /**
+ * Filter a Customize setting value not handled as a theme_mod or option.
+ *
+ * The dynamic portion of the hook name, $this->id_date['base'], refers to
+ * the base slug of the setting name.
+ *
+ * For settings handled as theme_mods or options, see those corresponding
+ * functions for available hooks.
+ *
+ * @since 3.4.0
+ *
+ * @param mixed $default The setting default value. Default empty.
+ */