rails/rails — pull request #13417 by TalkativeTree (2013-12-20 02:39:41+00:00)
Title: fix CollectionAssociation's comments

change CollectionAssociation's comments to say Association instead of AssociationProxy to match changes for 3.1 removing Association proxy.

```ruby
# CollectionAssociation is an abstract class that provides common stuff to
# ease the implementation of association proxies that represent
# collections. See the class hierarchy in Association ~~AssociationProxy~~.
#
# CollectionAssociation:
# HasManyAssociation => has_many
# HasManyThroughAssociation + ThroughAssociation => has_many :through
```