https://www.typescriptlang.org/docs/handbook/2/classes.html
https://birdeatsbug.com/blog/object-oriented-programming-in-typescript
https://betterprogramming.pub/understand-object-oriented-programming-with-typescript-c4ff8afa40d
https://dev.to/kevin_odongo35/object-oriented-programming-with-typescript-574o