protected void validateAccessToken(final String accessTokenId, final OAuth20AccessToken accessToken,
                                       final HttpServletRequest request, final HttpServletResponse response) {
    }
Handle request internal response entity.

@param request  the request
@param response the response
@return the response entity
@throws Exception the exception
support/cas-server-support-oauth-core-api/src/main/java/org/apereo/cas/support/oauth/web/endpoints/OAuth20UserProfileEndpointController.java