Copy reference types properly

test/transform/resource/before/ValAnonymousSubclassSelfReference.java

@@ -1,9 +1,18 @@
-// issue 2420: to trigger the problem 2 var/val, one normal variable and a anonymous self reference is required
+// issue 2420: to trigger the problem 2 var/val, at least one normal variable and a anonymous self reference is required
+import java.util.Map;
+import java.util.HashMap;
+
 import lombok.val;
 
 public class ValAnonymousSubclassSelfReference {
-	public void test() {
+	public <T> void test(T arg) {
+		T d = arg;
+		Integer[] e = new Integer[1];
+		int[] f = new int[0];
+		java.util.Map<java.lang.String, Integer> g = new HashMap<String, Integer>();
+		Integer h = 0;  
 		int i = 0;
+		
 		val j = 1;
 		val k = 2;