Can't resolve Log Forging Fortify issue

It is possible to use fortify Java annotations to tell Fortify that the data returned from a sanitizing function is now safe.

When looking at my log forging problems I had strings coming in through a web API and thus had the flags XSS and WEB on my strings. I tried to find annotations that would only remove these flags, but couldn't find any way to remove the WEB flag. The only documentation I've found is the Samples/advanced/javaAnnotation directory.

Since my sanitation method does sanitize strings, I choose to remove all flags. This could be a problem though, as it could hide privacy violations.

@FortifyValidate("return")
private String sanitizeString(String taintedString) {
    return doSomethingWithTheString(taintedString);
}