code: public List<EntityExtractor> listEntities(UUID appId, String versionId, ListEntitiesOptionalParameter listEntitiesOptionalParameter) {
          return listEntitiesWithServiceResponseAsync(appId, versionId, listEntitiesOptionalParameter).toBlocking().single().body();
      }
docs: Gets information about the entity models.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param listEntitiesOptionalParameter the object representing the optional parameters to be set before calling this API
  @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;EntityExtractor&gt; object if successful.