code: public static boolean handleIfNoneMatch(final String ifNoneMatch, final ETag etag, boolean allowWeak) {
          return handleIfNoneMatch(ifNoneMatch, Collections.singletonList(etag), allowWeak);
      }
docs: Handles the if-none-match header. returns true if the request should proceed, false otherwise
  
  @param ifNoneMatch the header
  @param etag       The etags
  @return