code: public Observable<OperationStatus> deletePatternAnyEntityModelAsync(UUID appId, String versionId, UUID entityId) {
          return deletePatternAnyEntityModelWithServiceResponseAsync(appId, versionId, entityId).map(new Func1<ServiceResponse<OperationStatus>, OperationStatus>() {
              @Override
              public OperationStatus call(ServiceResponse<OperationStatus> response) {
                  return response.body();
              }
          });
      }
docs: Deletes a Pattern.Any entity extractor from the application.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param entityId The Pattern.Any entity extractor ID.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the OperationStatus object