Gst.Event.new_sink_message

function new_sink_message(name:String, msg:Gst.Message):Gst.Event {
    // Gjs wrapper for gst_event_new_sink_message()
}

Create a new sink-message event. The purpose of the sink-message event is to instruct a sink to post the message contained in the event synchronized with the stream.

name is used to store multiple sticky events on one pad.