c_gtk_source_gutter_renderer_pixbuf_get_stock_id

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
__gshared extern (C)
gchar* function(GtkSourceGutterRendererPixbuf* renderer) c_gtk_source_gutter_renderer_pixbuf_get_stock_id;

Meta