/**
* Constructor method (PHP5 only)
*
* @param $heading Heading of the report (shown as title)
* @param $style Name of the stylesheet file
* @param $dir Directory where the report files should be dumped
* @access public
*/
public function __construct(
$heading="Coverage Report",
$style="",
$dir="report"
) {
parent::__construct($heading, $style, $dir);
}