private function migrateEnrollments()
    {
        $this->output->info('### Migrating enrollments ###');
        foreach ($this->enrollments() as $enrollment) {
            if ($enrollment->person == null ) {
                $this->output->error('Skipping enrolmment because no personal data');
                continue;
            }
            $enrollment->showMigratingInfo($this->output,1);
            $newEnrollment = $this->migrateEnrollment($enrollment);
            if ($newEnrollment) $this->migrateEnrollmentDetails($enrollment, $newEnrollment);
        }
        $this->output->info('### END Migrating enrollments ###');
    }