Constructors with custom page classes?

[AAD Web Team]

If we’re using custom page classes, is it acceptable to have a constructor, or does that cause problems by overriding the constructor that should be running in the parent Page class? Should we call the parent class constructor? For example in /site/classes/DefaultPage.php, would this be correct?

class DefaultPage extends Page
{
	function __construct() {
        parent::__construct();

		// … set some class properties for later use …
    }
}