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());
}