GstMiniObject                       as MiniObject
## GStreamer classes
        GstBuffer                       as Buffer,		gst_buffer_get_type			if gstreamer-core
        GstEvent                        as Event, 		gst_event_get_type			if gstreamer-core
        GstMessage                      as Message,		gst_message_get_type			if gstreamer-core
        GstQuery                        as Query,  		gst_query_get_type			if gstreamer-core