/**
* The *real* file input class we shall use for reading data
*/
- private $inputStream = null;
+ private $inputStream = NULL;
/**
* The *real* file output class we shall use for reading data
*/
- private $outputStream = null;
+ private $outputStream = NULL;
/**
* An instance of this class
*/
- private static $thisInstance = null;
+ private static $thisInstance = NULL;
/**
* Protected constructor