docs: public void onNodeStarted(final IExecutionNode node) {
  
          if (!node.equals(this.theLastNode)) {
  
              if (this.theLastNode != null) {
                  printStarted("Starting: " + format(this.theLastNode));
              }
  
              this.theLastNode = node;
          } else {
              // not sure how this would happen
              printStarted("Starting: " + format(node));
          }
  
      }