static String build(final String accountId, final String region, final DateTime instanceLaunchTime) {
        return Paths.get(
                accountId, region, instanceLaunchTime.toString("YYYY"), instanceLaunchTime.toString("MM"),
                instanceLaunchTime.toString("dd")).toString() + "/";
    }
static String build(final String accountId, final String region, final DateTime instanceLaunchTime) {
        return Paths.get(
                accountId, region, instanceLaunchTime.toString("YYYY"), instanceLaunchTime.toString("MM"),
                instanceLaunchTime.toString("dd")).toString() + "/";
    }
static String build ( final String accountId , final String region , final DateTime instanceLaunchTime ) { return Paths . get ( accountId , region , instanceLaunchTime . toString ( "YYYY" ) , instanceLaunchTime . toString ( "MM" ) , instanceLaunchTime . toString ( "dd" ) ) . toString ( ) + "/" ; }
Builds the prefix that will be prepended to the 'bucketname'<br/>
Something like '123456789/eu-west-1/2015/06/12/'

@param accountId
@param region             name of region
@param instanceLaunchTime
@return
Builds the prefix that will be prepended to the bucketname <br / > Something like 123456789 / eu - west - 1 / 2015 / 06 / 12 /