public void Setup()
		{
			var mockWebClient = new Mock<IWebClient>();
			mockWebClient.Setup(x => x.DownloadDataTaskAsync(It.IsAny<Uri> ())).ReturnsAsync(
				File.ReadAllBytes("Assets/CA.zip")
			);

			var mockWebClientFactory = new Mock<IWebClientFactory>();
			mockWebClientFactory.Setup(x => x.Create ()).Returns(mockWebClient.Object);

			this.import = new CountryFeatureRetriever (mockWebClientFactory.Object);
		}
		public void TearDown()
		{
			this.import = null;
		}