code: private void processPropDefaultValues() {
      getMethodsWithAnnotation(component, PropDefault.class).forEach(method -> {
        PropDefault propValidator = method.getAnnotation(PropDefault.class);
  
        String exposedMethodName = exposeExistingJavaMethodToJs(method);
        String propertyName = propValidator.value();
        optionsBuilder.addStatement("options.addJavaPropDefaultValue(p.$L, $S)",
            exposedMethodName,
            propertyName);
      });
    }
docs: Process prop default values from the Component Class.