+ virtual const char *ToString(const cec_menu_state state) = 0;
+ virtual const char *ToString(const cec_version version) = 0;
+ virtual const char *ToString(const cec_power_status status) = 0;
+ virtual const char *ToString(const cec_logical_address address) = 0;
+ virtual const char *ToString(const cec_deck_control_mode mode) = 0;
+ virtual const char *ToString(const cec_deck_info status) = 0;
+ virtual const char *ToString(const cec_opcode opcode) = 0;
+ virtual const char *ToString(const cec_system_audio_status mode) = 0;
+ virtual const char *ToString(const cec_audio_status status) = 0;
+ virtual const char *ToString(const cec_vendor_id vendor) = 0;
+ virtual const char *ToString(const cec_client_version version) = 0;
+ virtual const char *ToString(const cec_server_version version) = 0;
+