--- a/net/minecraft/server/level/Ticket.java
+++ b/net/minecraft/server/level/Ticket.java
@@ -17,6 +17,15 @@
     private final TicketType type;
     private final int ticketLevel;
     private long ticksLeft;
+    // CraftBukkit start
+    public Object key;
+
+    public static Ticket of(TicketType tickettype, int i, Object key) {
+        Ticket ticket = new Ticket(tickettype, i);
+        ticket.key = key;
+        return ticket;
+    }
+    // CraftBukkit end
 
     public Ticket(TicketType tickettype, int i) {
         this(tickettype, i, tickettype.timeout());