docs: public Observable<ServiceResponse<Void>> updateFaceWithServiceResponseAsync(String personGroupId, UUID personId, UUID persistedFaceId, UpdateFaceOptionalParameter updateFaceOptionalParameter) {
          if (this.client.azureRegion() == null) {
              throw new IllegalArgumentException("Parameter this.client.azureRegion() is required and cannot be null.");
          }
          if (personGroupId == null) {
              throw new IllegalArgumentException("Parameter personGroupId is required and cannot be null.");
          }
          if (personId == null) {
              throw new IllegalArgumentException("Parameter personId is required and cannot be null.");
          }
          if (persistedFaceId == null) {
              throw new IllegalArgumentException("Parameter persistedFaceId is required and cannot be null.");
          }
          final String userData = updateFaceOptionalParameter != null ? updateFaceOptionalParameter.userData() : null;
  
          return updateFaceWithServiceResponseAsync(personGroupId, personId, persistedFaceId, userData);
      }