src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/ir/BlockStatement.java

*** 88,97 ****
--- 88,106 ----
      @Override
      public boolean isTerminal() {
          return block.isTerminal();
      }
  
+     /**
+      * Tells if this is a synthetic block statement or not.
+      *
+      * @return true if this is a synthetic statement
+      */
+     public boolean isSynthetic() {
+         return block.isSynthetic();
+     }
+ 
      @Override
      public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
          if (visitor.enterBlockStatement(this)) {
              return visitor.leaveBlockStatement(setBlock((Block)block.accept(visitor)));
          }