[TASK] Code cleanup

Classes/Service/MailTemplateService.php

@@ -418,7 +418,7 @@ class MailTemplateService {
 	 * @param string|null $name
 	 * @param string|null $contentType
 	 */
-	public function addFileFromFilePathForDirectSending(string $path, string $name = null, string $contentType = null){
+	public function addFileFromFilePathForDirectSending(string $path, string $name = NULL, string $contentType = NULL) {
 		$this->mailMessage->attachFromPath($path, $name, $contentType);
 	}