Object key = getReportSetKey(element);
                    ReportSet existing = merged.get(key);
                    if (existing != null) {
                        mergeReportSet(existing, element, sourceDominant, context);
                    } else {
                        merged.put(key, element.clone());
                    }
                }

            for (ReportSet element : tgt) {
                Object key = getReportSetKey(element);
                ReportSet existing = merged.get(key);
                if (existing != null) {
                    mergeReportSet(element, existing, sourceDominant, context);
                }
                merged.put(key, element);
            }

            target.setReportSets(new ArrayList<>(merged.values()));
        }
    }

        target.setReportSets(
                merge(target.getReportSets(), source.getReportSets(), sourceDominant, new ReportSetKeyComputer()));
    }

    protected void mergeReportSet(
            ReportSet target, ReportSet source, boolean sourceDominant, Map<Object, Object> context) {
        mergeConfigurationContainer(target, source, sourceDominant, context);