dup_or_share

# File activemodel/lib/active_model/attribute/user_provided_default.rb, line 29
      def dup_or_share # :nodoc:
        # Can't elide dup when the default is a Proc
        # See Attribute#dup_or_share
        if @user_provided_value.is_a?(Proc)
          dup
        else
          super
        end
      end