SWT: Reduced technical debt by 1 hour

This Merge Request reduces the technical debt by 1 hour.
The following Issues are mine:

https://scm.thm.de/sonar/issues/search#issues=AVUcYefQZZaz45oU5hNg
https://scm.thm.de/sonar/issues/search#issues=AVV5iIwr_ZGzjbhSycWz
https://scm.thm.de/sonar/issues/search#issues=AVUCS1miZZaz45oU5hKk
https://scm.thm.de/sonar/issues/search#issues=AVUXs26DZZaz45oU5hMq
https://scm.thm.de/sonar/issues/search#issues=AVQ56Rp7K-KeNIHUVgui
https://scm.thm.de/sonar/issues/search#issues=AVVtZ7g7_ZGzjbhSycWY
https://scm.thm.de/sonar/issues/search#issues=AVUmxrIHhHvo-MxF_DOm
https://scm.thm.de/sonar/issues/search#issues=AVQ56Rq2K-KeNIHUVguo
https://scm.thm.de/sonar/issues/search#issues=AVQ56RrZK-KeNIHUVgus
https://scm.thm.de/sonar/issues/search#issues=AVRNoim7K-KeNIHUVgxK
https://scm.thm.de/sonar/issues/search#issues=AVRNoim8K-KeNIHUVgxL
https://scm.thm.de/sonar/issues/search#issues=AVRNoim8K-KeNIHUVgxM