[java] forgot the all important LeaveStackUndwinderException

java/runtime/Rakudo/Runtime/Exceptions/LeaveStackUnwinderException.java

@@ -0,0 +1,34 @@
+package Rakudo.Runtime.Exceptions;
+
+import Rakudo.Metamodel.RakudoObject;
+import Rakudo.Metamodel.Representations.RakudoCodeRef;
+
+/// <summary>
+/// This exception is thrown to actually unwind the (dotnet) stack after
+/// we run an exception handler.
+/// </summary>
+public class LeaveStackUnwinderException extends Exception
+{
+    /// <summary>
+    /// The block we're looking for.
+    /// </summary>
+    public RakudoCodeRef.Instance TargetBlock;
+
+    /// <summary>
+    /// The value to exit with.
+    /// </summary>
+    public RakudoObject PayLoad;
+
+    /// <summary>
+    /// Creates a LeaveStackUnwinderException to target the given block
+    /// and exit it with the specified payload.
+    /// </summary>
+    /// <param name="TargetBlock"></param>
+    /// <param name="PayLoad"></param>
+    public LeaveStackUnwinderException(RakudoCodeRef.Instance targetBlock, RakudoObject payLoad)
+    {
+        this.TargetBlock = targetBlock;
+        this.PayLoad = payLoad;
+    }
+}
+