class ADD_USER_NONIFIER_PING: public STG::NotifierBase<UserPtr> {
public:
explicit ADD_USER_NONIFIER_PING(PING & p) : ping(p) {}
class ADD_USER_NONIFIER_PING: public STG::NotifierBase<UserPtr> {
public:
explicit ADD_USER_NONIFIER_PING(PING & p) : ping(p) {}