code: public DataSetBuilder sequence(String column, BigInteger initial, BigInteger step) {
      ensureArgNotNull(initial);
      ensureArgNotNull(step);
      return sequence(column, initial, n -> n.add(step));
    }
docs: Set {@link BigInteger} sequence filler for column
  with a specified step.
  
  <p>
  A call to this method is shorthand for
  <code>sequence(column, initial, n -&gt; n.add(step))</code>.
  </p>
  
  @param column Column name.
  @param initial Initial sequence value.
  @param step Sequence step.
  @return The builder instance (for chained calls).
  @see #sequence(String, Object, UnaryOperator)
  @see #sequence(String, BigInteger)