code: public Location setLocation(String location) {
  		Location prop = (location == null) ? null : new Location(location);
  		setLocation(prop);
  		return prop;
  	}
docs: Sets the physical location of the event.
  @param location the location (e.g. "Room 101") or null to remove
  @return the property that was created
  @see <a href="http://tools.ietf.org/html/rfc5545#page-87">RFC 5545
  p.87-8</a>
  @see <a href="http://tools.ietf.org/html/rfc2445#page-84">RFC 2445
  p.84</a>
  @see <a href="http://www.imc.org/pdi/vcal-10.doc">vCal 1.0 p.32</a>