ng2-file-upload multiple files to different URL's, but use same Uploader

Question

I am using ng2-file-upload to manage file uploading in my Angular 6 application. What I want to achieve is to be able to upload multiple files using the same uploader:FileUploader object, but every file should have a different URL.

public uploader: FileUploader = new FileUploader();

<div ng2FileDrop
           [ngClass]="{'dz-file-over': hasBaseDropZoneOver}"
           (fileOver)="fileOverBase($event)"
           [uploader]="uploader"
           class="fileupload-drop-zone">
        Drop required files here
</div>

I am able to use onBeforeUploadItem to change the URL of every file right before it gets uploaded.

this.uploaderCustomerIdentificaiton.onBeforeUploadItem = (fileItem): any => {
  fileItem.url = newUrl;
  return {fileItem};
};

For every file I need to upload, I will have separate (notice that it's the same uploader object).

<div ng2FileDrop [uploader]="uploader"....</div>

So every ng2FileDrop should have a different URL.