String a = mojoExecution.getPlugin().getArtifactId();

        Plugin plugin = findPlugin(g, a, project.getBuildPlugins());

        if (plugin == null && project.getPluginManagement() != null) {
            plugin = findPlugin(g, a, project.getPluginManagement().getPlugins());
        }

        if (plugin != null) {
            PluginExecution pluginExecution =

        Plugin pluginInPom = findPlugin(plugin, project.getBuildPlugins());

        if (pluginInPom == null && project.getPluginManagement() != null) {
            pluginInPom = findPlugin(plugin, project.getPluginManagement().getPlugins());
        }

        if (pluginInPom != null) {
            if (plugin.getVersion() == null) {

            sitePlugin = new Plugin();
            sitePlugin.setArtifactId("maven-site-plugin");
            sitePlugin.setLocation("artifactId", location);
            PluginManagement pluginManagement = build.getPluginManagement();
            if (pluginManagement == null) {
                pluginManagement = new PluginManagement();
                build.setPluginManagement(pluginManagement);
            }

            Build build = request.getPom().getBuild();

            result = resolveFromProject(request, build.getPlugins());

            if (result == null && build.getPluginManagement() != null) {
                result = resolveFromProject(request, build.getPluginManagement().getPlugins());
            }
        }

        return result;
    }

        Build build = model.getBuild();

        if (build != null) {
            expand(build.getPlugins());

            PluginManagement pluginManagement = build.getPluginManagement();

            if (pluginManagement != null) {
                expand(pluginManagement.getPlugins());
            }
        }
    }

    private void expand(List<Plugin> plugins) {

            }
            versions.put(plugin.getKey(), plugin.getVersion());
        }

        PluginManagement pluginManagement = project.getPluginManagement();
        if (pluginManagement != null) {
            for (Plugin plugin : pluginManagement.getPlugins()) {
                if (plugin.getVersion() == null) {

        public void mergeManagedBuildPlugins(Model model) {
            Build build = model.getBuild();
            if (build != null) {
                PluginManagement pluginManagement = build.getPluginManagement();
                if (pluginManagement != null) {
                    mergePluginContainerPlugins(build, pluginManagement);
                }
            }
        }

        Model pom = request.getPom();
        Build build = pom != null ? pom.getBuild() : null;
        PluginManagement management = build != null ? build.getPluginManagement() : null;

        // map of groupId -> Set(artifactId) plugin candidates:
        // if value is null, keys are coming from settings, and no artifactId filtering is applied

                target.setBuild(new Build());
            }

            Map<Object, Object> context = Collections.singletonMap(
                    PLUGIN_MANAGEMENT, target.getBuild().getPluginManagement());

            mergePluginContainer_Plugins(target.getBuild(), source.getBuild(), false, context);
        }

        @SuppressWarnings({"checkstyle:methodname"})
        @Override

                        return plugin;
                    }
                }

                PluginManagement mgmt = build.getPluginManagement();
                if (mgmt != null) {
                    for (Plugin plugin : mgmt.getPlugins()) {
                        if (groupId.equals(plugin.getGroupId()) && artifactId.equals(plugin.getArtifactId())) {