public static HttpResponse fromPublisher(ResponseHeaders headers,
                                             Publisher<? extends ServerSentEvent> contentPublisher) {
        return fromPublisher(headers, contentPublisher, HttpHeaders.of());
    }
Creates a new Server-Sent Events stream from the specified {@link Publisher}.

@param headers the HTTP headers supposed to send
@param contentPublisher the {@link Publisher} which publishes the objects supposed to send as contents
core/src/main/java/com/linecorp/armeria/server/streaming/ServerSentEvents.java