docs: 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