Jonathan Hefner 608cbfae36 Factor out ActiveModel::AttributeRegistration ... As a step toward sharing more code between Active Model and Active Record, this commit factors an `ActiveModel::AttributeRegistration` module out of `ActiveModel::Attributes`. This module is marked as `nodoc` and is for internal use only. Additionally, this commit adds thorough test coverage of attribute registration and inheritance. (`activemodel/test/cases/attributes_test.rb` does already test some of this behavior, but it is focused on high-level functionality.)		2022-03-11 22:15:14 -06:00
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user_provided_default.rb	Factor out ActiveModel::AttributeRegistration	2022-03-11 22:15:14 -06:00