decode

# File activerecord/lib/active_record/attribute_set/yaml_encoder.rb, line 20
      def decode(coder)
        if coder["attributes"]
          coder["attributes"]
        else
          attributes_hash = Hash[coder["concise_attributes"].map do |attr|
            if attr.type.nil?
              attr = attr.with_type(default_types[attr.name])
            end
            [attr.name, attr]
          end]
          AttributeSet.new(attributes_hash)
        end
      end