lifo/docrails — comment on commit c317419359d9d868c4e8c12a2ba2e2f541eef3d6
File:  line 0
By dolzenko:

`Errors#add` is unversally used by Rails own validators, actually `<<` seems like lower level API https://github.com/rails/rails/blob/master/activemodel/lib/active_model/errors.rb#L215