Vaadin 8: What's the replacement for VTextField.updateFieldContent

Hi guys,

I try to update an Add-On to Vaadin 8 and can’t find a fitting replacement for the VTextField.updateFieldContent-Function.
As far as I understand it should affect placeholder, if the given text is null or empty or just write in the text without triggering valueChange-Events.
Seems I just can’t find a proper replacement. Can anyone of you give me a hint?