# File lib/nokogiri/xml/node.rb, line 329
      def replace(new_node)
        if new_node.is_a?(Document)
          raise ArgumentError, "Node.replace requires a Node argument, and cannot accept a Document.\n(You probably want to select a node from the Document with at() or search(), or create a new Node via Node.new().)\n"
        end
        replace_with_node new_node
      end