docs: def startActionToolTip( self, action ):
          """
          Starts the timer to hover over an action for the current tool tip.
          
          :param      action | <QAction>
          """
          self._toolTipTimer.stop()
          QToolTip.hideText()
          
          if not action.toolTip():
              return
          
          self._toolTipAction = action
          self._toolTipTimer.start()