# File lib/module_extensions/instance_method_visibility.rb, line 10
    def instance_method_visibility(name)
      if private_method_defined?(name)
        :private
      elsif protected_method_defined?(name)
        :protected
      elsif public_method_defined?(name)
        :public
      else
        raise(NoMethodError,
              "`#{name}' - not an instance method of `#{self.name}'")
      end
    end