ID               int              `gorm:"primarykey; size:255"`
	AppliesToProduct []*CouponProduct `gorm:"foreignKey:CouponId;constraint:OnDelete:CASCADE"`
	AmountOff        uint32           `gorm:"column:amount_off"`
	PercentOff       float32          `gorm:"column:percent_off"`
}

type CouponProduct struct {
	CouponId  int    `gorm:"primarykey;size:255"`
	ProductId string `gorm:"primarykey;size:255"`
	Desc      string
}

type Order struct {

        code ->> function: say_hi(name="Rick")
        function ->> code: gib das gespeicherte Resultat zurück
    end

    rect rgba(0, 255, 255, .1)
        code ->> function: say_hi(name="Camila")
        function ->> code: gib das gespeicherte Resultat zurück
    end
```

Im Fall unserer Abhängigkeit `get_settings()` akzeptiert die Funktion nicht einmal Argumente, sodass sie immer den gleichen Wert zurückgibt.

	MOVW	$0xff, R9            // MOVW $255, R9             // ff90a0e3
	MOVW	$0xff000000, R9      // MOVW $4278190080, R9      // ff94a0e3
	MOVW	$0xff(R0), R1        // MOVW $255(R0), R1         // ff1080e2
	MOVW.S	$0xff(R0), R1        // MOVW.S $255(R0), R1       // ff1090e2
	MOVW	$-0xff(R0), R1       // MOVW $-255(R0), R1        // ff1040e2
	MOVW.S	$-0xff(R0), R1       // MOVW.S $-255(R0), R1      // ff1050e2

 *
 * @author Kevin Bourrillion
 * @author Louis Wasserman
 */
public class UnsignedBytesTest extends TestCase {
  private static final byte LEAST = 0;
  private static final byte GREATEST = (byte) 255;

  // Only in this class, VALUES must be strictly ascending
  private static final byte[] VALUES = {LEAST, 127, (byte) 128, (byte) 129, GREATEST};

  public void testToInt() {

    end

    rect rgba(0, 255, 0, .1)
        code ->> function: say_hi(name="Rick", salutation="Mr.")
        function ->> execute: execute function code
        execute ->> code: return the result
    end

    rect rgba(0, 255, 255, .1)
        code ->> function: say_hi(name="Rick")
        function ->> code: return stored result
    end

    rect rgba(0, 255, 255, .1)

   * possible.
   *
   * @param value a value between 0 and 255 inclusive
   * @return the {@code byte} value that, when treated as unsigned, equals {@code value}
   * @throws IllegalArgumentException if {@code value} is negative or greater than 255
   */
  @CanIgnoreReturnValue
  public static byte checkedCast(long value) {

        execute ->> code: 返回结果
    end

    rect rgba(0, 255, 0, .1)
        code ->> function: say_hi(name="Rick", salutation="Mr.")
        function ->> execute: 执行函数代码
        execute ->> code: 返回结果
    end

    rect rgba(0, 255, 255, .1)
        code ->> function: say_hi(name="Rick")
        function ->> code: 返回存储的结果
    end

    rect rgba(0, 255, 255, .1)
        code ->> function: say_hi(name="Camila")

    assertThat(converter.convert("0xff")).isEqualTo((Short) (short) 255);
    assertThat(converter.convert("0xFF")).isEqualTo((Short) (short) 255);
    assertThat(converter.convert("-0xFF")).isEqualTo((Short) (short) (-255));
    assertThat(converter.convert("#0000FF")).isEqualTo((Short) (short) 255);
    assertThat(converter.convert("0666")).isEqualTo((Short) (short) 438);
  }

    assertThat(converter.convert("0xff")).isEqualTo((Short) (short) 255);
    assertThat(converter.convert("0xFF")).isEqualTo((Short) (short) 255);
    assertThat(converter.convert("-0xFF")).isEqualTo((Short) (short) (-255));
    assertThat(converter.convert("#0000FF")).isEqualTo((Short) (short) 255);
    assertThat(converter.convert("0666")).isEqualTo((Short) (short) 438);
  }

    assertThat(converter.convert("-1")).isEqualTo((Integer) (-1));
    assertThat(converter.convert("0xff")).isEqualTo((Integer) 255);
    assertThat(converter.convert("0xFF")).isEqualTo((Integer) 255);
    assertThat(converter.convert("-0xFF")).isEqualTo((Integer) (-255));
    assertThat(converter.convert("#0000FF")).isEqualTo((Integer) 255);
    assertThat(converter.convert("0666")).isEqualTo((Integer) 438);
  }