*** old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugCloseable.java	Fri Jul  7 09:29:52 2017
--- new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugCloseable.java	Fri Jul  7 09:29:52 2017

*** 32,39 ****
--- 32,46 ----
          @Override
          public void close() {
          }
      };
  
+     /**
+      * Gets the debug context associated with this object.
+      */
+     default DebugContext getDebug() {
+         return null;
+     }
+ 
      @Override
      void close();
  }