### Question:
Deadline { public BigInteger toBigInteger() { return BigInteger.valueOf(getInstant()); } Deadline(int units, ChronoUnit chronoUnit);  Deadline(BigInteger input); BigInteger toBigInteger(); static Deadline create(int units, ChronoUnit chronoUnit); static Deadline create(); long getInstant(); LocalDateTime getLocalDateTime(ZoneId zoneId); LocalDateTime getLocalDateTime();  }### Answer:
@Test void fromToBigInteger() { BigInteger originalValue = BigInteger.valueOf(System.currentTimeMillis()); Assertions.assertEquals(originalValue, new Deadline(originalValue).toBigInteger()); }