@Override
  public Boolean getBoolean( Object object ) throws KettleValueException {
    throw new KettleValueException( toStringMeta() + ": it's not possible to convert from Timestamp to Boolean" );
  }
@Test( expected = KettleValueException.class )
  public void testConvertTimestampToBoolean_Null() throws KettleValueException {
    ValueMetaTimestamp valueMetaTimestamp = new ValueMetaTimestamp();
    valueMetaTimestamp.getBoolean( TIMESTAMP_WITH_MILLISECONDS );
  }