Starts the timer to hover over an action for the current tool tip.
        
        :param      action | <QAction>

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()