rails/rails — pull request #4349 by lest (2012-01-06 14:04:00+00:00)
Title: Array.wrap is an overhead as there is already check for class

```
irb(main):008:0> attributes_collection = {a: 1}
=> {:a=>1}
irb(main):009:0> Array.wrap attributes_collection
=> [{:a=>1}]
irb(main):010:0> [attributes_collection]
```