GstElementFactory* gst_element_get_factory (GstElement *element);
-void gst_element_install_std_props (GstElementClass *klass,
+void gst_element_class_install_std_props (GstElementClass *klass,
const char *first_name, ...);
GstBin* gst_element_get_managing_bin (GstElement *element);