--- old/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/shared/ContiguousSpace.java	2019-02-13 16:34:58.938271476 +0100
+++ new/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/shared/ContiguousSpace.java	2019-02-13 16:34:58.554271489 +0100
@@ -32,7 +32,7 @@
 import sun.jvm.hotspot.runtime.*;
 import sun.jvm.hotspot.types.*;
 
-public class ContiguousSpace extends CompactibleSpace {
+public class ContiguousSpace extends CompactibleSpace implements LiveRegionsProvider {
   private static AddressField topField;
 
   static {
@@ -79,8 +79,8 @@
   }
 
   /** Returns regions of Space where live objects live */
-  public List/*<MemRegion>*/ getLiveRegions() {
-    List res = new ArrayList();
+  public List<MemRegion> getLiveRegions() {
+    List<MemRegion> res = new ArrayList<>();
     res.add(new MemRegion(bottom(), top()));
     return res;
   }