Path outputDirectory = Paths.get(project.getBuild().getOutputDirectory());
        if (!outputDirectory.toFile().exists()) {
            return true;
        }

        try (Stream<Path> outputFiles = Files.walk(outputDirectory)) {
            // Not using File#lastModified() to avoid a Linux JDK8 milliseconds precision bug: JDK-8177809.
            long artifactLastModified =