function sendMessagePromise(vararg)
        {
            var params = Array.prototype.slice.call(arguments);
            return InspectorBackendClass.AgentPrototype.prototype._sendMessageToBackendPromise.call(this, domainAndMethod, signature, replyArgs, params);
        }
@param {...*} vararg
@this {InspectorBackendClass.AgentPrototype}
@return {!Promise.<*>}