public static ResponseDispatch newInstance(int responseStatus, Iterable<ByteBuffer> content) {
        return newInstance(new Response(responseStatus), content);
    }
<p>Factory method for creating a ResponseDispatch with a {@link Response} that has the given status code, and
collection of ByteBuffer content.
Because this method uses the Iterable interface, you can create the ByteBuffers lazily, or
provide them as they become available.</p>

@param responseStatus The status code of the Response to dispatch.
@param content        The provider of the Response's ByteBuffer content.
@return The created ResponseDispatch.
jdisc_core/src/main/java/com/yahoo/jdisc/handler/ResponseDispatch.java