Sorry @texdc but i agree with @bakura10.
If you make this change in the name of the method every application developed using the old name will stop working
I agree the name of the method and what it do aren't the same, but correcting that will cause a bigger problem

Sugestion add `preprendMatchedRouteName` as an alias of `setMatchedRouteName` and mark as `setMatchedRouteName` deprecated.
You could either create another method with another name to remove all matched route names and add a new one, something like `resetMatchedRouteName`.