assertTrue("ACCESS_CONTROL_ALLOW_CREDENTIALS should be final", Modifier.isFinal(credentialsField.getModifiers()));

        Field maxAgeField = CorsHandler.class.getDeclaredField("ACCESS_CONTROL_MAX_AGE");
        assertTrue("ACCESS_CONTROL_MAX_AGE should be final", Modifier.isFinal(maxAgeField.getModifiers()));
    }

    // Helper method to create mock HttpServletRequest
    private HttpServletRequest createMockRequest() {

    /**
     * CORS header for specifying cache duration for preflight requests.
     */
    protected static final String ACCESS_CONTROL_MAX_AGE = "Access-Control-Max-Age";

    /**
     * Processes the CORS request by setting appropriate headers.
     *
     * @param origin the origin of the request
     * @param request the servlet request

        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_METHODS, fessConfig.getApiCorsAllowMethods());
        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_HEADERS, fessConfig.getApiCorsAllowHeaders());
        httpResponse.addHeader(ACCESS_CONTROL_MAX_AGE, fessConfig.getApiCorsMaxAge());
        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_CREDENTIALS, fessConfig.getApiCorsAllowCredentials());
    }

  public static final String ACCESS_CONTROL_EXPOSE_HEADERS = "Access-Control-Expose-Headers";

  /** The HTTP {@code Access-Control-Max-Age} header field name. */
  public static final String ACCESS_CONTROL_MAX_AGE = "Access-Control-Max-Age";

  /** The HTTP {@code Age} header field name. */
  public static final String AGE = "Age";

  /** The HTTP {@code Allow} header field name. */