*** old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugDumpHandler.java	Mon Mar 20 17:37:51 2017
--- new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.debug/src/org/graalvm/compiler/debug/DebugDumpHandler.java	Mon Mar 20 17:37:51 2017

*** 27,36 ****
--- 27,44 ----
  public interface DebugDumpHandler extends Closeable {
  
      void dump(Object object, String message);
  
      /**
+      * Add arbitrary capability for use by the handler.
+      *
+      * @param capability
+      */
+     default void addCapability(Object capability) {
+     }
+ 
+     /**
       * Flushes and releases resources managed by this dump handler. A subsequent call to
       * {@link #dump(Object, String)} will create and open new resources. That is, this method can be
       * used to reset the handler.
       */
      @Override