Add views "Clone" link field

Maybe I'm not quite understanding the issue or request here, but the clone option is added to the Operations in admin/content view, where a node can be cloned. The clone "button" is also present when on node (next to edit, delete, revisions - if you have the permission of course) and the clone option was also added to the contextual links. What does this change actually do (except provide a field in view) and is it really needed?

When you have a custom entity listing with a custom set of operations you need the entity clone link.

Im not able to understand the issue exactly . But tried replicating it
for Comment view i could not see the clone liks before .
After applying Mr!63 im able to see the clone link fields