func ExampleTxOptions_memotext() {
	ms := New("fake")
	USD := NewAsset("USD", "GALC5V4UUUICHENN3ZZLQY6UWAC67CMKVXYT4MT7YGQRD6RMXXCAMHP6", Credit4Type)
	err := ms.Pay("SAED4QHN3USETFHECASIM2LRI3H4QTVKZK44D2RC27IICZPZQEGXGXFC", "GAGTJGMT55IDNTFTF2F553VQBWRBLGTWLU4YOOIFYBR2F6H6S4AEC45E", "1", USD, Opts().WithMemoText("boo"))
	if err != nil {
		log.Fatalf("Pay (memotext): %v", ErrorString(err))
	}
	err = ms.Pay("SAED4QHN3USETFHECASIM2LRI3H4QTVKZK44D2RC27IICZPZQEGXGXFC", "GAGTJGMT55IDNTFTF2F553VQBWRBLGTWLU4YOOIFYBR2F6H6S4AEC45E", "1", USD, Opts().WithMemoID(42))
	if err != nil {
		log.Fatalf("Pay (memoid): %v", ErrorString(err))
	}
	fmt.Printf("ok")
}
Payments with memotext and memoid
package microstellar
import (
	"fmt"
	"log"
	"testing"
)