scanner.next();
        boolean isEnd = false;
        if (scanner.lookingAt('/')) {
            isEnd = true;
            scanner.next();
        }

        // element name
        scanner.skip(WHITESPACE_WITH_EOL);
        scanner.mark();
        scanner.find(END_ELEMENT_NAME);
        String elementName = scanner.region().toLowerCase();
        if (isEnd) {

                        scanner.skipSeparator();
                        patch = scanner.scanDigit();
                    }
                }
            }

            if (scanner.isEnd()) {
                return new VersionNumber(major, minor, micro, patch, null, this, false);
            }

            if (scanner.isQualifier()) {
                scanner.skipSeparator();

                        scanner.skipSeparator();
                        patch = scanner.scanDigit();
                    }
                }
            }

            if (scanner.isEnd()) {
                return new VersionNumber(major, minor, micro, patch, null, this);
            }

            if (scanner.isQualifier()) {
                scanner.skipSeparator();