May be I need to create Event Observer. I would like to check Product's Type Condition & Display Message Accordingly on Shopping Cart Page.
<event name="controller_action_predispatch_XXX_XX_XX">
<observer name="checkcout_page" instance="Custom\Module\Observer\CheckShoppingCartObserver" />
</event>
http://www.advancedcheckout.com/blog/list-event-magento2.html/
https://cyrillschumacher.com/magento2-list-of-all-dispatched-events/
It's not giving event information when it's gonna execute on, on which place/page?
What will be method i need use instead of XXX.
pre
&post
dispatch right?