docs: public static IndexPlanners withProviders( final Map<String, IndexPlanner> plannersByProviderName ) {
          return new IndexPlanners() {
              @Override
              public void applyIndexes( QueryContext context,
                                        IndexCostCalculator calculator ) {
                  // Call the standard index planner ...
                  StandardIndexPlanner.INSTANCE.applyIndexes(context, calculator);
  
                  if (context.getIndexDefinitions().hasIndexDefinitions()) {
                      // Call the index planners ...
                      for (IndexPlanner planner : plannersByProviderName.values()) {
                          planner.applyIndexes(context, calculator);
                      }
                  }
              }
          };
  
      }