/**
  * Wraps the <code>ResultSet</code> in an instance of this class. This is equivalent to:
  *
  * <pre>
  * ProxyFactory.instance().createResultSet(new SqlNullCheckedResultSet(rs));
  * </pre>
  *
  * @param rs The <code>ResultSet</code> to wrap.
  * @return wrapped ResultSet
  */
 public static ResultSet wrap(ResultSet rs) {
   return factory.createResultSet(new SqlNullCheckedResultSet(rs));
 }