pub unsafe extern "C" fn gst_sdp_message_insert_attribute(
msg: *mut GstSDPMessage,
idx: c_int,
attr: *mut GstSDPAttribute,
) -> GstSDPResult
pub unsafe extern "C" fn gst_sdp_message_insert_attribute(
msg: *mut GstSDPMessage,
idx: c_int,
attr: *mut GstSDPAttribute,
) -> GstSDPResult