public async Task Show()
            {
                var authorId   = 4470846;
                var followInfo = await AuthorsFollowingEndpoint.Follow(authorId); // arrange following

                var responseInfo = await AuthorsFollowingEndpoint.Show(followInfo.Id);

                await AuthorsFollowingEndpoint.Unfollow(followInfo.Id); // cleanup following

                Assert.NotNull(responseInfo);
                Assert.Equal(followInfo.Id, responseInfo.Id);
                Assert.Equal(followInfo.Author.Id, responseInfo.Author.Id);
                Assert.Equal(followInfo.User.Id, responseInfo.User.Id);
            }
            public async Task ShowNotExistingInfo()
            {
                var responseInfo = await AuthorsFollowingEndpoint.Show(51523178);

                Assert.Null(responseInfo);
            }