src/MimeMailer/MimeMessage.php
protected function _init()
    {
        foreach (self::$clearings as $var=>$val) {
            $this->{$var} = $val;
        }
        if (is_null($this->id)) {
            $this->id = uniqid(time());
        }
    }
protected function _init()
    {
        foreach (self::$clearings as $var=>$val) {
            $this->{$var} = $val;
        }
        if (is_null($this->id)) {
            $this->id = uniqid(time());
        }
    }
First initialization of the object

@return void