indent (REXML::Text)

    # File src/rexml/text.rb, line 179
                    def indent(string, level=1, style="\t", indentfirstline=true)
          return string if level < 0
                            new_string = ''
                            string.each { |line|
                                    indent_string = style * level
                                    new_line = (indent_string + line).sub(/[\s]+$/,'')
                                    new_string << new_line
                            }
                            new_string.strip! unless indentfirstline
                            return new_string
                    end