Which of the SOLID principles does this class break:

Snippet

Snippet class$$Foo $\{$ public: int$$member$1$; int$$member$2$; int$$member$3$; void$$addedAtALaterDate$()$; private: $//$so$$much$$empty; $\}$;

Dependency Inversion Principle

Liskov Substitution Principle

Interface Segregation Principle

Single Responsibility Principle

Open$/$Closed Principle