docs: @PublicEvolving
  	public <X extends Value> IterativeDataSet<T> registerAggregationConvergenceCriterion(
  			String name, Aggregator<X> aggregator, ConvergenceCriterion<X> convergenceCheck) {
  		this.aggregators.registerAggregationConvergenceCriterion(name, aggregator, convergenceCheck);
  		return this;
  	}