/**
  * Constructor
  *
  * @param string $formattingInfo
  * @param string $key
  */
 public function __construct($formattingInfo, $key)
 {
     parent::__construct($formattingInfo);
     $this->key = $key;
 }
 /**
  * Constructor
  *
  * @param string $formattingInfo
  * @param integer $type
  */
 public function __construct($formattingInfo, $type)
 {
     parent::__construct($formattingInfo);
     $this->type = $type;
 }
 /**
  * Constructor
  *
  * @param string $formattingInfo
  * @param string $df
  */
 public function __construct($formattingInfo, $df)
 {
     parent::__construct($formattingInfo);
     $this->df = $df;
 }