code: @Deprecated
    public FluoConfiguration addObservers(Iterable<ObserverSpecification> observers) {
      int next = getNextObserverId();
      for (ObserverSpecification oconf : observers) {
        addObserver(oconf, next++);
      }
      return this;
    }
docs: Adds multiple observers using unique integer prefixes for each.
  
  @deprecated since 1.1.0. Replaced by {@link #setObserverProvider(String)} and
  {@link #getObserverProvider()}