code: public OptionalThing<ActionMapping> findActionMapping(String actionName) {
          if (!initialized) {
              initialize();
          }
          final ActionMapping mapping = actionMappingMap.get(actionName);
          if (mapping != null) {
              return OptionalThing.of(mapping);
          }
          if (ManagedHotdeploy.isHotdeploy()) {
              prepareActionComponent(actionName); // lazy load, put to the map
          }
          return OptionalThing.ofNullable(actionMappingMap.get(actionName), () -> {
              String msg = "Not found the action mapping for the action key: " + actionName;
              throw new IllegalStateException(msg);
          });
      }
docs: ============