Rewrite the class declaration to follow best practices, e.g., operators, three important functions, and printing. The functions you write must be const-correct. You do not need to create, an iterator, begin function, or end function. class Appointment Sequence { private: }; std::string title; /// < short description /** * One Appointment Node - Linked List Building Block */ struct Node { Appointment data; /// < Stored Appointment Node *next; /// < Next Node. public: /** */ Node (); Node (Appointment appointment); Create an empty Appointment Appointment Sequence (); /** * Add an Appointment to the sequence */ bool addAppointment (const Appointment& appointment);