public function getDiscUsageAsync(Requests\GetDiscUsageRequest $request) 
    {
        return $this->getDiscUsageAsyncWithHttpInfo($request)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }
public function getDiscUsageAsync(Requests\GetDiscUsageRequest $request) 
    {
        return $this->getDiscUsageAsyncWithHttpInfo($request)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }
/*
Operation getDiscUsageAsync

Check the disk usage of the current account

@param Requests\GetDiscUsageRequest $request is a request object for operation

@throws \InvalidArgumentException
@return \GuzzleHttp\Promise\PromiseInterface