docs: Add missing Since tag

diff --git a/gtk/gtkstyleprovider.c b/gtk/gtkstyleprovider.c
index b1c7d49a590f4975c38233da65ab6bd472025508..80f411c3a2e5f962cce159d0e8c1b58649a2285f 100644 (file)
--- a/gtk/gtkstyleprovider.c
+++ b/gtk/gtkstyleprovider.c
@@ -93,6 +93,8 @@ gtk_style_provider_get_style (GtkStyleProvider *provider,
  * the widget represented by @path.
  *
  * Returns: %TRUE if the property was found and has a value, %FALSE otherwise
+ *
+ * Since: 3.0
  **/
 gboolean
 gtk_style_provider_get_style_property (GtkStyleProvider *provider,