How to empty WebEngine profile

[sardylan]

Hi,
I'm trying to find a way to completely clear WebEngine profile in my application.
All files about caches, cookies and various storages are created into this folder:
~/.local/share/qWebChat/QtWebEngine/Default

A sure-working way could be to manually delete the storage folder, but I'm sure that there is a better qt-way to do it.

I'm using Qt 5.5.1 in Linux 64bit.

Thanks.