@Override
    public void enterSingleVersionWithCommas(SingleVersionWithCommasContext ctx) {
        informSubVersions(ctx);
    }
Parse the useragent and return every part that was found.

@param userAgent The useragent instance that needs to be parsed
@return If the parse was valid (i.e. were there any parser errors: true=valid; false=has errors
analyzer/src/main/java/nl/basjes/parse/useragent/parse/UserAgentTreeFlattener.java