textbuffer: Add missing public API documentation.

This API was added in a52757874ee.

diff --git a/gtk/gtktextbuffer.c b/gtk/gtktextbuffer.c
index 5ec18f7c5ee1c66977fccfca695245f38842e2f0..8bf2d50356874b0aeb9e008587055e243f0db351 100644 (file)
--- a/gtk/gtktextbuffer.c
+++ b/gtk/gtktextbuffer.c
@@ -4077,6 +4077,14 @@ cut_or_copy (GtkTextBuffer *buffer,
     }
 }
 
+/**
+ * gtk_text_buffer_get_selection_content:
+ * @buffer: a #GtkTextBuffer
+ *
+ * Get a content provider for this buffer.
+ *
+ * Returns: (transfer full): a new #GdkContentProvider.
+ **/
 GdkContentProvider *
 gtk_text_buffer_get_selection_content (GtkTextBuffer *buffer)
 {