respond_to? (ActiveResource::Base)

    # File lib/active_resource/base.rb, line 908
        def respond_to?(method, include_priv = false)
          method_name = method.to_s
          if attributes.nil?
            return super
          elsif attributes.has_key?(method_name)
            return true
          elsif ['?','='].include?(method_name.last) && attributes.has_key?(method_name.first(-1))
            return true
          end
          # super must be called at the end of the method, because the inherited respond_to?
          # would return true for generated readers, even if the attribute wasn't present
          super
        end