Player player = ...; // get the player object string prefix = "[Admin] "; // set the prefix that will appear before the message string message = "Welcome to the server!"; // set the message to send player.MessagePrefixed(prefix, message); // send the message with the prefixIn this example, we're using the MessagePrefixed method to send a message to the player object with the specified prefix. The player will see the message displayed as "[Admin] Welcome to the server!". This can be used for various purposes, such as notifying players of events, rules, or announcements. The package library for csharp fCraft Player MessagePrefixed is likely fCraft.Core, as this library is part of the fCraft Minecraft server software.