public async Task GetSolutionTagAsync_ValidParameters_ExpectedResult()
        {
            IUKFastECloudClient client = Substitute.For <IUKFastECloudClient>();

            client.GetAsync <Tag>("/ecloud/v1/solutions/123/tags/testkey").Returns(new Tag()
            {
                Value = "testvalue"
            });

            var ops = new SolutionTagOperations <Tag>(client);
            var tag = await ops.GetSolutionTagAsync(123, "testkey");

            Assert.AreEqual("testvalue", tag.Value);
        }
        public async Task GetSolutionTagAsync_InvalidTagKey_ThrowsUKFastClientValidationException()
        {
            var ops = new SolutionTagOperations <Tag>(null);

            await Assert.ThrowsExceptionAsync <UKFastClientValidationException>(() => ops.GetSolutionTagAsync(123, ""));
        }