protected $authentication = 'none'; // Can be 'none', 'basic' or 'digest'
protected $username = FALSE;
protected $password = FALSE;
protected $key = FALSE;


protected $format = 'html';
protected $supported_formats = array(
'html' => 'text/html',
'php' => 'text/plain',
'json' => 'application/json',
'xml' => 'application/xml'
);


function __construct()
{
parent::Model();
}