# File lib/rspec/mocks/method_double.rb, line 23
      def visibility
        if Mock === @object
          'public'
        elsif object_singleton_class.private_method_defined?(@method_name)
          'private'
        elsif object_singleton_class.protected_method_defined?(@method_name)
          'protected'
        else
          'public'
        end
      end