public async Task ReadRealFile()
            {
                IWordTree tree = await new WordTreeBuilder().BuildFromDictionaryFileAsync(
                    new FileHelper().GetPathToRealDictionaryFile());

                Assert.True(tree.IsWord("rubiaceae"));
                Assert.True(tree.IsWord("katsuwonidae"));
                Assert.True(tree.IsWord("ritualistically"));
                Assert.True(tree.IsWord("mac"));
            }
            public async System.Threading.Tasks.Task BasicTest01Async()
            {
                string    content  = @"accolated
accolent
accoll
accolle
accolled
accollee
accombination
accommodable";
                string    tempfile = await new FileHelper().CreateTempFileWithContentAsync(content);
                IWordTree tree     = await new WordTreeBuilder().BuildFromDictionaryFileAsync(tempfile);

                Assert.True(tree.IsWord("accolated"));
                Assert.True(tree.IsWord("accolent"));
                Assert.True(tree.IsWord("accommodable"));
                Assert.False(tree.IsWord("accommodableK"));
            }