public function get($callUuid)
    {
        if (ArrayOperations::checkNull([$callUuid])) {
            throw
            new PlivoValidationException(
                'call uuid is mandatory');
        }
        $response = $this->client->fetch(
            $this->uri . $callUuid . '/',
            []
        );

        return new Call(
            $this->client,
            $response->getContent(),
            $this->pathParams['authId']);
    }