/**
  * Called after the check that all required registry values
  * have been set correctly has run.
  *
  * @return void
  */
 public function afterRegistry()
 {
     parent::afterRegistry();
     if (!$this->saveData) {
         throw new \Zend_Exception("No data to save specified while using " . __CLASS__);
     }
     if ($this->buttonClass) {
         if (!$this->buttonNoClass) {
             $this->buttonNoClass = $this->buttonClass;
         }
         if (!$this->buttonYesClass) {
             $this->buttonYesClass = $this->buttonClass;
         }
     }
 }
 /**
  * Called after the check that all required registry values
  * have been set correctly has run.
  *
  * @return void
  */
 public function afterRegistry()
 {
     parent::afterRegistry();
     if ($this->buttonClass) {
         if (!$this->buttonNoClass) {
             $this->buttonNoClass = $this->buttonClass;
         }
         if (!$this->buttonYesClass) {
             $this->buttonYesClass = $this->buttonClass;
         }
     }
 }