Spring integration annotation Java 8 Optional Incorrect Handling

I am using Spring boot 1.2.2.Release and Java 8, the problem is that Spring is wrapping Optional payload into new Optional objects as many times as I am passing it through transformer/service activator. E.g.

@ServiceActivator(inputChannel = ..., outputChannel = ...) 
public Optional<Foo> transform() {returns -> Optional.of(foo);}

@ServiceActivator(inputChannel = ..., outputChannel = ...)
public Optional<Foo> doSomething1(Opional<Foo> payload) {
     payload.ifPresent(f -> {System.out.println(f.getId());}); // this line throws ClassCastException 
  return foo;
}

The reason why above code throws ClassCastExcpetion(cannot cast java.util.Optional to Foo) because payload instead of containing foo as value contains another Optional Object and that Optional object contains foo as value.

I have read this where it mentioned

Now Spring Integration consistently handles the Java 8's Optional type.

I even tried with exact version of the framework mentioned in the document but no success