code: public DataSetBuilder sequence(String column, Timestamp initial, long step) {
      ensureArgNotNull(initial);
      return sequence(column, initial, ts -> new Timestamp(ts.getTime() + step));
    }
docs: Set {@link Timestamp} sequence filler for column
  with a specified step in milliseconds.
  
  <p>
  A call to this method is shorthand for
  <code>sequence(column, initial, ts -&gt; new Timestamp(ts.getTime() + step))</code>.
  </p>
  
  @param column Column day.
  @param initial Initial date.
  @param step Step in milliseconds.
  @return The builder instance (for chained calls).
  
  @see #sequence(String, Date, int)
  @see #sequence(String, Time, int)
  @see #sequence(String, Object, UnaryOperator)