public function __toString() { $str = parent::__toString(); if ($this->_entity) { $str .= "\nEntity: " . $this->_entity; } if (!empty($this->_validationErrors)) { $str .= "\nValidation errors:\n" . \Zend_Json::prettyPrint(\Zend_Json::encode($this->_validationErrors), array("indent" => " ")); } return $str; }