MultiStatusWriter multiStatusWriter = new MultiStatusWriter();
CompletableFuture<Void> published = handlePROPFIND(exchange, subPath, davPropfind, multiStatusWriter);
exchange.sendResponseHeaders(HttpResponseStatus.MULTI_STATUS.getCode(), 0l);
MultiStatusWriter multiStatusWriter = new MultiStatusWriter();
CompletableFuture<Void> published = handlePROPFIND(exchange, subPath, davPropfind, multiStatusWriter);
exchange.sendResponseHeaders(HttpResponseStatus.MULTI_STATUS.getCode(), 0l);