public void SomeResponse()
        {
            var responses = new SendResponse[]
            {
                SendResponse.FromMessageId("message1"),
                SendResponse.FromMessageId("message2"),
                SendResponse.FromException(
                    new FirebaseMessagingException(ErrorCode.Unknown, "error-message")),
            };

            var batchResponse = new BatchResponse(responses);

            Assert.Equal(2, batchResponse.SuccessCount);
            Assert.Equal(1, batchResponse.FailureCount);
            Assert.Equal(3, batchResponse.Responses.Count);
            Assert.True(responses.SequenceEqual(batchResponse.Responses));
        }