fixes #2304 Add constants for light-hybrid-4j (#2305)

Author: stevehu

cache-explorer/src/main/resources/config/cache.yml

@@ -410,7 +410,7 @@ private static void registerMiddlewareHandler(Object handler) {
      * constructor fields. To note: It could either implement HttpHandler, or
      * HandlerProvider.
      *
-     * @param handler
+     * @param handler handler string
      */
     private static void initStringDefinedHandler(String handler) {
 

handler/src/main/java/com/networknt/handler/Handler.java

@@ -51,6 +51,10 @@ public class Constants {
     public static final String SWAGGER_OPERATION_STRING = "swagger_operation";
     // OpenAPI 3.0 operation header name
     public static final String OPENAPI_OPERATION_STRING = "openapi_operation";
+    // Hybrid service schema
+    public static final String HYBRID_SERVICE_ID = "hybrid_service_id";
+    public static final String HYBRID_SERVICE_MAP = "hybrid_service_map";
+    public static final String HYBRID_SERVICE_DATA = "hybrid_service_data";
 
     public static final String SCOPE_TOKEN_STRING = "X-Scope-Token";
     public static final String CONSUL_TOKEN_STRING = "X-Consul-Token";