GST_IS_QUERY      628 gst/gstinfo.c    if (GST_IS_QUERY (object)) {
GST_IS_QUERY     3672 gst/gstpad.c     g_return_val_if_fail (GST_IS_QUERY (query), FALSE);
GST_IS_QUERY     3710 gst/gstpad.c     g_return_val_if_fail (GST_IS_QUERY (query), FALSE);
GST_IS_QUERY      824 gst/gstquery.c   g_return_val_if_fail (GST_IS_QUERY (query), NULL);