Function gstreamer_webrtc_sys::gst_webrtc_rtp_sender_set_priority

pub unsafe extern "C" fn gst_webrtc_rtp_sender_set_priority(
    sender: *mut GstWebRTCRTPSender, 
    priority: GstWebRTCPriorityType
)

This is supported on crate feature v1_20 only.