I need to use the Network Link Conditioner tool to test an issue with possibly dropped packets. However, all links on google say you need to download "Additional Tools for XCode" - but the links just go to the developer downloads home page, and the option isn't available anywhere on there. Likewise, "Xcode -> Open Developer Tool -> More Developer Tools..." just goes to the same location. It seems like the download has either been removed, or moved elsewhere - how do we get this tool now?