docs: private Bearer getBearer(final HttpServletRequest req) {
          final String authorizationHeader = req.getHeader(Headers.AUTHORIZATION.getName());
          if (StringUtils.isNotBlank(authorizationHeader)) {
              final String bearerToken =
                      authorizationHeader.substring(Headers.BEARER_TOKEN_PREFIX.length());
              return bearerService.parseBearerToken(bearerToken);
          }
          return MissingModelElement.BEARER;
      }