Gst.MiniObject.prototype.steal_qdata

function steal_qdata(quark:GLib.Quark):gpointer {
    // Gjs wrapper for gst_mini_object_steal_qdata()
}

This function gets back user data pointers stored via Gst.MiniObject.prototype.set_qdata and removes the data from object without invoking its destroy() function (if any was set).