return new ExecResult(stderr: stderr, stdout: stdout, returnCode: returnCode)
    }

    static String getStdout(String command) {
        ExecResult execResult = exec(command)

        assert execResult.returnCode == 0: "$command failed with return code: $execResult"
        return execResult.stdout
    }

    static Future<String> readStreamAsync(InputStream inputStream) {

                append("<title>Gradle @version@ Release Notes</title>").
                append("<link rel='stylesheet' type='text/css' href='https://assets.gradle.com/lato/css/lato-font.css'/>");
        addCssToHead(document);
        addJavascriptToHead(document);

        wrapH2InSectionTopic(document);
        addAnchorsForHeadings(document);