out := e
	out.obj = e.obj.DeepCopyObject()
	copy(out.versions, e.versions)
	return out
}

// NewEncodable creates an object that will be encoded with the provided codec on demand.
// Provided as a convenience for test cases dealing with internal objects.
func NewEncodable(e Encoder, obj Object, versions ...schema.GroupVersion) Object {
	if _, ok := obj.(*Unknown); ok {
		return obj
	}

	codec := serializer.NewCodecFactory(s).LegacyCodec(externalGV)

	inner := &runtimetesting.EmbeddedTest{
		ID: "inner",
	}
	outer := &runtimetesting.EmbeddedTest{
		ID:     "outer",
		Object: runtime.NewEncodable(codec, inner),
	}

	wire, err := runtime.Encode(codec, outer)
	if err != nil {
		t.Fatalf("Unexpected encode error '%v'", err)
	}

	t.Logf("Wire format is:\n%v\n", string(wire))

	table := []struct {
		obj      runtime.Object
		expected runtime.Object
		encoded  string
	}{
		{
			&runtimetesting.InternalExtensionType{
				Extension: runtime.NewEncodable(codec, &runtimetesting.ExtensionA{TestString: "foo"}),
			},
			&runtimetesting.InternalExtensionType{
				Extension: &runtime.Unknown{