private static String getSigningDateTime(HttpRequest request, Date signingTime) {
        Header dateHeader = request.getFirstHeader("X-Amz-Date");
        if (dateHeader != null) {
            return dateHeader.getValue();
        }
        synchronized (TIME_FORMAT) {
            return TIME_FORMAT.format(signingTime);
        }
    }
The state of an aws sigV4 request.

@author chas
@since 2016-12-9
src/main/java/io/fabric8/maven/docker/access/ecr/AwsSigner4Request.java