return values[0];
            }
            throw new InvalidAccessTokenException("invalid_request", "Invalid format: " + token);
        }
        final String name = ComponentUtil.getFessConfig().getApiAccessTokenRequestParameter();
        if (StringUtil.isNotBlank(name)) {
            return request.getParameter(name);
        }
        return null;
    }

    /**
     * Set the random instance.

     * The value is, e.g.  <br>
     * comment: API access token request parameter.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getApiAccessTokenRequestParameter();

    /**
     * Get the value for the key 'api.access.token.request.parameter' as {@link Integer}. <br>
     * The value is, e.g.  <br>
     * comment: API access token request parameter.