This was a very helpful course for someone aspiring to be a backend developer. While studying development, you come across object-oriented programming, but as a learner, it was really difficult to know how to write code, what code is object-oriented, and what code is good for collaboration. In that regard, this course scratched those itchy spots for me. Of course, I think the content is difficult for aspiring developers (junior developers) to fully digest. However, I believe that the various refactoring techniques and mindset I learned from this course will gradually help me grow as I write code going forward. Thank you to the instructor for creating such a great course. Today is December 25th, and I hope everyone has a joyful Christmas and a happy end to the year. Thank you.