code: public List<EventTypeInner> listEventTypes(String topicTypeName) {
          return listEventTypesWithServiceResponseAsync(topicTypeName).toBlocking().single().body();
      }
docs: List event types.
  List event types for a topic type.
  
  @param topicTypeName Name of the topic type
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws CloudException thrown if the request is rejected by server
  @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
  @return the List&lt;EventTypeInner&gt; object if successful.