### Question:
TimestampDatum extends Datum { @Override public byte[] asTextBytes() { return asChars().getBytes(TextDatum.DEFAULT_CHARSET); } TimestampDatum(long timestamp); long getTimestamp(); int getEpoch(); long getJavaTimestamp(); int getCenturyOfEra(); int getYear(); int getMonthOfYear(); int getDayOfYear(); int getDayOfWeek(); int getWeekOfYear(); int getDayOfMonth(); int getHourOfDay(); int getMinuteOfHour(); int getSecondOfMinute(); int getMillisOfSecond(); int getUnixTime(); String toString(); static String asChars(TimeMeta tm, TimeZone timeZone, boolean includeTimeZone); String toString(TimeZone timeZone, boolean includeTimeZone); @Override long asInt8(); @Override String asChars(); @Override int size(); @Override byte [] asByteArray(); @Override byte[] asTextBytes(); @Override Datum equalsTo(Datum datum); @Override int compareTo(Datum datum); @Override boolean equals(Object obj); @Override Datum plus(Datum datum); @Override Datum minus(Datum datum); @Override int hashCode(); @Override TimeMeta asTimeMeta(); static final int SIZE; }### Answer:
@Test public final void testAsTextBytes() { Datum d = DatumFactory.createTimestamp("1980-04-01 01:50:01"); assertArrayEquals(d.toString().getBytes(), d.asTextBytes()); d = DatumFactory.createTimestamp("1980-04-01 01:50:01.578"); assertArrayEquals(d.toString().getBytes(), d.asTextBytes()); }