Entities should provide route and route parameter methods (instead of uri()?)

Problem/Motivation

Drupal core is inbetween using paths and routes for things, but moving towards routes and route parameters. Entities are still stuck somewhere between the two with 'route_base_path' and uri() methods, while work is ongoing to change the links to routes instead (see #2133469: Replace path-based entity links with route names → ).

Proposed resolution

Figure out the best way for entities to provide routes and route parameters themselves instead of uri()s directly to match with Drupal 8's route based reality.

Remaining tasks

• Discuss.
• Implement.
• Review.
• Commit.

User interface changes

None.

API changes

Likely uri() may go away and new methods may be added.

Related Issues

#2133469: Replace path-based entity links with route names →