Function gstreamer_rtsp_sys::gst_rtsp_message_parse_auth_credentials

pub unsafe extern "C" fn gst_rtsp_message_parse_auth_credentials(
    msg: *mut GstRTSPMessage, 
    field: GstRTSPHeaderField
) -> *mut *mut GstRTSPAuthCredential

This is supported on crate feature v1_12 only.