Add a new DEFAULT_TAB_WIDGET, open editor to set text if no text is given

def addEmptyTab(self, text=''):
        """
        Add a new DEFAULT_TAB_WIDGET, open editor to set text if no text is given
        """
        tab = self.defaultTabWidget()
        c = self.count()
        self.addTab(tab, text)
        self.setCurrentIndex(c)
        if not text:
            self.tabBar().editTab(c)
        self.sigTabAdded.emit(tab)
        return tab