Speicher210 / fastbill-api

     * @param integer $customerId The customer ID.

     * @return Customer|null

     */

    public function getCustomer($customerId)

    {

        $requestData = new Get\RequestData();

        $requestData->setCustomerId($customerId);

        $customers = $this->getCustomers($requestData)->getResponse()->getCustomers();

        return isset($customers[0]) ? $customers[0] : null;

    }

    /**

     * Get once customer by the external ID.

     * @param string $customerExternalUid The external customer ID.

     * @return Customer|null

     */

    public function getCustomerByExternalUid($customerExternalUid)

    {

        $requestData = new Get\RequestData();

        $requestData->setCustomerExternalUid($customerExternalUid);

        $customers = $this->getCustomers($requestData)->getResponse()->getCustomers();

        return isset($customers[0]) ? $customers[0] : null;

    }

    /**

     * Update a customer.