}
    }

    /**
     * DuplicateMerger
     */
    protected static class DuplicateMerger extends MavenModelMerger {

        public void mergePlugin(Plugin target, Plugin source) {
            super.mergePlugin(target, source, false, Collections.emptyMap());
        }
    }

    @Override

                        Plugin plugin = new Plugin();
                        plugin.setLocation("", element.getLocation(""));
                        plugin.setGroupId(null);
                        mergePlugin(plugin, element, sourceDominant, context);

                        Object key = getPluginKey(element);

                        master.put(key, plugin);
                    }
                }

                for (Plugin element : src) {
                    Object key = getPluginKey(element);
                    Plugin existing = merged.get(key);
                    if (existing != null) {
                        mergePlugin(existing, element, sourceDominant, context);
                    } else {
                        merged.put(key, element);
                        added.put(key, element);
                    }
                }

                for (Plugin element : src) {
                    Object key = getPluginKey(element);
                    Plugin existing = master.get(key);
                    if (existing != null) {
                        mergePlugin(existing, element, sourceDominant, context);

                        if (!pending.isEmpty()) {
                            predecessors.put(key, pending);
                            pending = new ArrayList<>();

                    Object key = getPluginKey(element);
                    Plugin managedPlugin = managedPlugins.get(key);
                    if (managedPlugin != null) {
                        mergePlugin(element, managedPlugin, false, context);
                    }
                }
            }
        }

        @Override
        protected void mergePlugin_Executions(

              <!--              <exclude>org.apache.maven.model.merge.MavenModelMerger</exclude>-->
              <!--              <exclude>org.apache.maven.model.normalization.DefaultModelNormalizer$DuplicateMerger#mergePlugin(org.apache.maven.model.Plugin,org.apache.maven.model.Plugin):METHOD_REMOVED</exclude>-->

            PluginManagement target, PluginManagement source, boolean sourceDominant, Map<Object, Object> context) {
        mergePluginContainer(target, source, sourceDominant, context);
    }

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