public void op_Invoke_Func() { var obj = new LexicalCollection(NormalityComparer.Ordinal); obj.Add(string.Concat("Foo", '\u00A0', "Bar")).Synonyms.Add(string.Concat("Left", '\u00A0', "Right")); obj.Invoke(x => x.NormalizeWhiteSpace()); Assert.Equal("Foo Bar", obj.First().CanonicalForm); Assert.Equal("Left Right", obj.First().Synonyms.First()); }