07. Behevioral Patterns, p.3 (39. GoF Design Patterns of Software Architecture in OOP)
40. === Design Patterns Interview Questions ===: https://disk.yandex.uz/d/54B-k6PBnfMAXA
40. === Design Patterns Interview Questions ===: https://disk.yandex.uz/d/54B-k6PBnfMAXA