code: public ServiceFuture<UUID> createRegexEntityModelAsync(UUID appId, String versionId, RegexModelCreateObject regexEntityExtractorCreateObj, final ServiceCallback<UUID> serviceCallback) {
          return ServiceFuture.fromResponse(createRegexEntityModelWithServiceResponseAsync(appId, versionId, regexEntityExtractorCreateObj), serviceCallback);
      }
docs: Adds a regex entity model to the application version.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param regexEntityExtractorCreateObj A model object containing the name and regex pattern for the new regex entity extractor.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object