/**
  * Check for silenced call to functions.
  *
  * @param String $text
  *        	The text of the token to test
  */
 private function _checkSilenced($text)
 {
     if ($this->_isActive('checkSilencedError')) {
         $exceptions = $this->_config->getTestExceptions('checkSilencedError');
         if (empty($exceptions) || !in_array($text, $exceptions)) {
             $previousToken = $this->tokenizer->peekPrvsToken();
             if ($previousToken->id === T_AROBAS) {
                 $this->_writeError('checkSilencedError', $this->_getMessage('SILENCED_ERROR'));
             }
         }
     }
 }