code: public void setRange(Range range) {
  		replace(RANGE, (range == null) ? null : range.getValue());
  	}
docs: <p>
  Sets the RANGE parameter value.
  </p>
  <p>
  This parameter is used by the {@link RecurrenceId} property. It defines
  the effective range of recurrence instances that the property references.
  </p>
  @param range the range or null to remove
  @see <a href="http://tools.ietf.org/html/rfc5545#page-23">RFC 5545
  p.23-4</a>