public void ParseResponseString_StandartResponseParsing_IsCorrect()
        {
            string responseJson = "{ \"recipient_id\": \"10083\", \"message_id\": \"339\"}";

            ApiResponse <string> response = _formatter.ParseResponseString <string>(responseJson);

            Assert.AreEqual(response.RecipientId, 10083);
            Assert.AreEqual(response.MessageId, 339);
        }