public function getHoursLoggedForLastMonth($project = null, $branches = null)
    {
        $startDate   = date_format(date_sub(date_create(), date_interval_create_from_date_string('1 month')), 'm/01/Y');
        $endDate = date_format(date_sub(date_create(), date_interval_create_from_date_string('1 month')), 'm/t/Y');

        return $this->getHoursLoggedFor($startDate, $endDate, $project, $branches);
    }