src/Broadcast/Broadcast.php
public function previewByName($msgType, $message, $to)
    {
        return $this->preview($msgType, $message, $to, self::PREVIEW_BY_NAME);
    }
public function previewByName($msgType, $message, $to)
    {
        return $this->preview($msgType, $message, $to, self::PREVIEW_BY_NAME);
    }
Preview a message by name.

@param string $msgType message type
@param mixed  $message message
@param $to

@return mixed