public void Dig6()
{
NativeNamedType named = new NativeNamedType("bar", new NativeTypeDef("td1", BuiltinType.NativeFloat));
NativeTypeDef td = new NativeTypeDef("foo", named);
Assert.Equal(NativeSymbolKind.TypeDefType, td.DigThroughTypeDefAndNamedTypesFor("foo").Kind);
Assert.Same(td, td.DigThroughTypeDefAndNamedTypesFor("foo"));
Assert.Equal(NativeSymbolKind.BuiltinType, td.DigThroughTypeDefAndNamedTypes().Kind);
Assert.Equal(NativeSymbolKind.NamedType, td.DigThroughTypeDefAndNamedTypesFor("bar").Kind);
NativeNamedType named2 = new NativeNamedType("named2", td);
Assert.Equal(NativeSymbolKind.TypeDefType, named2.DigThroughNamedTypesFor("foo").Kind);
Assert.Null(named2.DigThroughNamedTypesFor("bar"));
}