**4. Conclusions**

Based on the results of the research carried out, the following conclusions were drawn:


**Author Contributions:** Conceptualization, A.K. and Z.G.; Investigation, J.K.-W.; methodology: Z.G.; resources: A.K. and J.K.-W.; supervision, A.K.; writing—original draft, A.K., Z.G. and J.K.-W.; writing—review & editing, A.K., Z.G. and J.K.-W. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Conflicts of Interest:** The author declares no conflict of interest.
