src/Card/Card.php
public function getTicketCacheKey()
    {
        if (is_null($this->ticketCacheKey)) {
            return $this->ticketCachePrefix.$this->getAccessToken()->getAppId();
        }

        return $this->ticketCacheKey;
    }
public function getTicketCacheKey()
    {
        if (is_null($this->ticketCacheKey)) {
            return $this->ticketCachePrefix.$this->getAccessToken()->getAppId();
        }

        return $this->ticketCacheKey;
    }
Get ApiTicket token cache key.

@return string