tik4net.Api.ApiCommand.EnsureApiSentences C# (CSharp) Метод

        private IEnumerable<ApiSentence> EnsureApiSentences(IEnumerable<ITikSentence> sentences)
        {
            if (sentences.Any(sentence => !(sentence is ApiSentence)))
                throw new InvalidOperationException("ApiCommand expects ApiSentence as result from ApiConnection.");

            return sentences.Cast<ApiSentence>();
        }