Updates the header right-click menu to include grouping options if
        desired.
        
        :param      menu  | <QMenu>
                    index | <int>

def setupHeaderMenu(self, menu, index):
        """
        Updates the header right-click menu to include grouping options if
        desired.
        
        :param      menu  | <QMenu>
                    index | <int>
        """
        if not self.userGroupingEnabled():
            return False
        
        first_action = menu.actions()[1]
        column = self.columnOf(index)
        
        enable_action = QAction(menu)
        enable_action.setText('Enable Grouping')
        
        disable_action = QAction(menu)
        disable_action.setText('Disable Grouping')
        
        quick_action = QAction(menu)
        quick_action.setText('Group by "%s"' % column)
        
#        adv_action = QAction(menu)
#        adv_action.setText('More Grouping Options...')
        
        menu.insertSeparator(first_action)
        menu.insertAction(first_action, enable_action)
        menu.insertAction(first_action, disable_action)
        menu.insertSeparator(first_action)
        menu.insertAction(first_action, quick_action)
#        menu.insertAction(first_action, adv_action)
        
        quick_action.triggered.connect(self.groupByHeaderIndex)
#        adv_action.triggered.connect(self.showAdvancedGroupingOptions)
        enable_action.triggered.connect(self.activateGrouping)
        disable_action.triggered.connect(self.deactivateGrouping)
        return True