@GetMapping(value = OAuth20Constants.BASE_OAUTH20_URL + '/' + OAuth20Constants.INTROSPECTION_URL,
        produces = MediaType.APPLICATION_JSON_VALUE)
    @Operation(summary = "Handle OAuth introspection request")
    public ResponseEntity<? extends BaseOAuth20IntrospectionAccessTokenResponse> handleRequest(
        final HttpServletRequest request, final HttpServletResponse response) throws Throwable {
        return handlePostRequest(request, response);
    }
Handle request.

@param request  the request
@param response the response
@return the response entity
support/cas-server-support-oauth-core-api/src/main/java/org/apereo/cas/support/oauth/web/endpoints/OAuth20IntrospectionEndpointController.java