docs: public void setCosts(Costs nodeCosts) {
  		// add the costs from the step function
  		nodeCosts.addCosts(this.solutionSetDeltaPlanNode.getCumulativeCostsShare());
  		nodeCosts.addCosts(this.nextWorkSetPlanNode.getCumulativeCostsShare());
  
  		super.setCosts(nodeCosts);
  	}