public void Setup() { var content = Enumerable.Range(0, N).Select(i => new KeyValuePair <string, int>(i.ToString(), i)); dictionary = new Dictionary <string, int>(content); immutableDictionary = ImmutableDictionary.CreateBuilder <string, int>(); immutableTrieDictionary = ImmutableTrieDictionary.CreateBuilder <string, int>(); immutableDictionary.AddRange(content); immutableTrieDictionary.AddRange(content); }