I am uploading files that I need to attach to email via office365 API. 

What I need is the content of the file in a variable WITHOUT storing/saving the file, how can I do that?

```
foreach ($request->filesToUpload as $file) {
    $originalName = $file->getClientOriginalName();//working
    $content = $file->getContent();//<- I need this, but not working
    //$this->addAttachment($content, $originalName) //logic for later
}

```