Octokit.Reactive.ObservableEventsClient.GetAll C# (CSharp) Method

        public IObservable<Activity> GetAll()
        {
            return GetAll(ApiOptions.None);
        }

            public void EnsuresNonNullArguments()
            {
                var gitHubClient = Substitute.For<IGitHubClient>();
                var client = new ObservableEventsClient(gitHubClient);

                Assert.Throws<ArgumentNullException>(() => client.GetAll(null));
            }