public function getListFileVersionsAsync(Requests\GetListFileVersionsRequest $request) 
    {
        return $this->getListFileVersionsAsyncWithHttpInfo($request)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }
public function getListFileVersionsAsync(Requests\GetListFileVersionsRequest $request) 
    {
        return $this->getListFileVersionsAsyncWithHttpInfo($request)
            ->then(
                function ($response) {
                    return $response[0];
                }
            );
    }
/*
Operation getListFileVersionsAsync

Get the file's versions list

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

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