#3823: Add client brand API

api/src/main/java/net/md_5/bungee/api/connection/ProxiedPlayer.java

@@ -382,4 +382,12 @@ public interface ProxiedPlayer extends Connection, CommandSender
      */
     @ApiStatus.Experimental
     void transfer(String host, int port);
+
+    /**
+     * Gets the client brand of this player.
+     * If the player has not sent a brand packet yet, it will return null.
+     *
+     * @return the brand of the client, or null if not received yet
+     */
+    String getClientBrand();
 }