How to develop a plugin that can intercept page copy?

When copy a page, sometimes user also chooses copy the sub pages. If there are too many sub pages. It may impact the confluence server stability.So I want to develop a plugin that can intercept page copy behavior.

However, I found that there are some limitation as bellow:
" The event system is not designed to allow a listener to veto the action that caused the event."
https://developer.atlassian.com/server/confluence/event-listener-module/

So I want to know that, can the intercept plugin be available?