*** old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.options/src/org/graalvm/options/OptionDescriptors.java	Fri Jul  7 09:31:58 2017
--- new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.options/src/org/graalvm/options/OptionDescriptors.java	Fri Jul  7 09:31:58 2017

*** 79,88 ****
--- 79,96 ----
              return new UnionOptionDescriptors(descriptors);
          }
      }
  
      /**
+      * {@inheritDoc}
+      *
+      * @since 1.0
+      */
+     @Override
+     Iterator<OptionDescriptor> iterator();
+ 
+     /**
       * Create an {@link OptionDescriptors} instance from a list. The option descriptors
       * implementation is backed by a {@link LinkedHashMap} that preserves ordering.
       *
       * @since 1.0
       */