code: JsTopicName getJsTopicNameAnnotation(Annotation[] parameterAnnotations) {
  		for (Annotation parameterAnnotation : parameterAnnotations) {
  			if (parameterAnnotation.annotationType().equals(JsTopicName.class)) {
  				return (JsTopicName) parameterAnnotation;
  			}
  		}
  		return null;
  	}
docs: Get JsTopicName annotation
  
  @param parameterAnnotations
  @param topic
  @return