func gobEncodeOpFor(ut *userTypeInfo) (*encOp, int) {
	rt := ut.user
	if ut.encIndir == -1 {
		rt = reflect.PointerTo(rt)
	} else if ut.encIndir > 0 {
		for i := int8(0); i < ut.encIndir; i++ {
			rt = rt.Elem()
		}
	}
	var op encOp
	op = func(i *encInstr, state *encoderState, v reflect.Value) {
		if ut.encIndir == -1 {
			// Need to climb up one level to turn value into pointer.
			if !v.CanAddr() {

			slowpoke = slowpoke.Elem()
		}
		ut.indir++
	}

	if ok, indir := implementsInterface(ut.user, gobEncoderInterfaceType); ok {
		ut.externalEnc, ut.encIndir = xGob, indir
	} else if ok, indir := implementsInterface(ut.user, binaryMarshalerInterfaceType); ok {
		ut.externalEnc, ut.encIndir = xBinary, indir
	}

	// NOTE(rsc): Would like to allow MarshalText here, but results in incompatibility