public static <T> HttpResponse fromStream(ResponseHeaders headers, Stream<T> contentStream,
                                              HttpHeaders trailers, Executor executor,
                                              Function<? super T, ? extends ServerSentEvent> converter) {
        requireNonNull(headers, "headers");
        requireNonNull(contentStream, "contentStream");
        requireNonNull(trailers, "trailers");
        requireNonNull(executor, "executor");
        requireNonNull(converter, "converter");
        return streamingFrom(contentStream, sanitizeHeaders(headers), trailers,
                             o -> toHttpData(converter, o), executor);
    }
Creates a new Server-Sent Events stream from the specified {@link Stream} and {@code converter}.

@param headers the HTTP headers supposed to send
@param contentStream the {@link Stream} which publishes the objects supposed to send as contents
@param trailers the HTTP trailers
@param executor the executor which iterates the stream
@param converter the converter which converts published objects into {@link ServerSentEvent}s
core/src/main/java/com/linecorp/armeria/server/streaming/ServerSentEvents.java