public static HttpResponse fromEvent(ServerSentEvent sse) {
        return fromEvent(defaultHttpHeaders, sse, HttpHeaders.of());
    }
Creates a new Server-Sent Events stream of the specified {@code content}.

@param sse the {@link ServerSentEvent} object supposed to send as contents
core/src/main/java/com/linecorp/armeria/server/streaming/ServerSentEvents.java