In `org.example.kickoff.business.email.EmailService` in method `buildTemplateContent` one can read ``` Arrays.stream(EmailTemplatePart.values()) .filter(part -> !templateParts.containsKey(part.getKey())) .forEach(part -> templateParts.putIfAbsent(part, emailTemplateService.build(templateEmail, part, messageParameters))); ``` I think this should be `.filter(part -> !templateParts.containsKey(part))`