instance method deprecate

# File activestorage/lib/active_storage/attached/model.rb, line 184
          def deprecate(action)
            reflection_name = proxy_association.reflection.name
            attached_name = reflection_name.to_s.partition("_").first
            ActiveSupport::Deprecation.warn(<<-MSG.squish)
              Calling `#{action}` from `#{reflection_name}` is deprecated and will be removed in Rails 7.1.
              To migrate to Rails 7.1's behavior call `#{action}` from `#{attached_name}` instead: `#{attached_name}.#{action}`.
            MSG
          end