# File lib/json-schema/uri/uuid.rb, line 203
                def parse obj
                        str = obj.to_s.sub %r/\Aurn:uuid:/, ''
                        str.gsub! %r/[^0-9A-Fa-f]/, ''
                        raw = str[0..31].lines.to_a.pack 'H*'
                        ret = new raw
                        ret.freeze
                        ret
                end