virtual COServerResponse EditContact(std::string Location, std::string Data) {};
virtual COServerResponse DeleteContact(std::string Location, std::string EntityTag) {};
virtual COServerResponse GetServerEntityTagValue(std::string Location) {};
virtual COServerResponse EditContact(std::string Location, std::string Data) {};
virtual COServerResponse DeleteContact(std::string Location, std::string EntityTag) {};
virtual COServerResponse GetServerEntityTagValue(std::string Location) {};
virtual bool HasValidResponse() {};
virtual bool IsSelfSigned() {};
virtual std::string GetErrorMessage() {};
virtual bool HasValidResponse() {};
virtual bool IsSelfSigned() {};
virtual std::string GetErrorMessage() {};