DownloadFileWithFileIdentifier Sample Code is Running...
stdClass Object
(
    [response] => stdClass Object
        (
            [rmsg] => Authentication Failed
        )

)
[401] Error connecting to the API (https://api.cybersource.com/sfs/v1/files/Q2hhcmdlYmFja0FuZFJldHJpZXZhbFJlcG9ydC1hYWVkMWEwMS03OGNhLTU1YzgtZTA1My1hMjU4OGUwYWNhZWEuY3N2LTIwMjAtMDctMzA%3D?organizationId=testrest)