getting value instead of result of valuePrepareFunction in custom editor

When I call this.cell.getValue() on my custom editor component I get the result of the valuePrepareFunction (intended to format the data into a human firendly form) instead of the actual value of my data. is there any way to get the value inside the custom editor component?.

Custom editor component.

```
@Component({
selector: 'app-table-file-upload',
templateUrl: './table-file-upload.component.html',
styleUrls: ['./table-file-upload.component.scss']
})
export class TableFileUploadComponent extends DefaultEditor implements AfterViewInit {
public cell: Cell;
constructor() {
super()
}

ngAfterViewInit() {
let value= this.cell.getValue();
//This gives me the result of valuePrepareFunction, but that's not what i want to edit!
console.log(value)

}
}

```