Returns the action at the given position.
        
        :param      pos | <QPoint>
        
        :return     <QAction> || None

def actionAt(self, pos):
        """
        Returns the action at the given position.
        
        :param      pos | <QPoint>
        
        :return     <QAction> || None
        """
        child = self.childAt(pos)
        if child:
            return child.action()
        return None