additionalInfo = $additionalInfo; } /** * 获取AdditionalInfo * @return mixed 返回结果 */ public function getAdditionalInfo() { return $this->additionalInfo; } public function __toString(): string { return __CLASS__ . ": [{$this->code}]: {$this->message}\n" . ($this->additionalInfo ? "\nAdditional Info: " . json_encode($this->additionalInfo, JSON_UNESCAPED_UNICODE) : ''); } }