public static HttpResponse fromStream(Stream<?> contentStream, Executor executor) {
        return fromStream(defaultHttpHeaders, contentStream, HttpHeaders.of(), executor, defaultMapper);
    }
Returns a newly created JSON Lines response from the specified {@link Stream}.

@param contentStream the {@link Stream} which publishes the objects supposed to send as contents
@param executor the executor which iterates the stream
core/src/main/java/com/linecorp/armeria/server/streaming/JsonLines.java