code: public List<AvailablePrebuiltEntityModel> listPrebuiltEntities(UUID appId, String versionId) {
          return listPrebuiltEntitiesWithServiceResponseAsync(appId, versionId).toBlocking().single().body();
      }
docs: Gets all the available prebuilt entity extractors for the application.
  
  @param appId The application ID.
  @param versionId The version ID.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @throws ErrorResponseException 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;AvailablePrebuiltEntityModel&gt; object if successful.