    # File temp/node.rb, line 24
                    def to_s indent=nil
          unless indent.nil?
            Kernel.warn( "#{self.class.name}.to_s(indent) parameter is deprecated" )
            f = REXML::Formatters::Pretty.new( indent )
            f.write( self, rv, indent )
          else
            f = REXML::Formatters::Default.new
            f.write( self, rv = "" )
          end
          return rv
                    end