Dependency dep = createDependency("group", "artifact", "1.0");

        plugin.addDependency(dep);

        pMgmt.addPlugin(plugin);

        build.setPluginManagement(pMgmt);

        new ProjectSorter(Collections.singletonList(project));
    }

    @Test
    void testShouldNotFailWhenProjectReferencesNonExistentProject() throws Exception {

            PluginManagement pluginManagement = build.getPluginManagement();
            if (pluginManagement == null) {
                pluginManagement = new PluginManagement();
                build.setPluginManagement(pluginManagement);
            }
            pluginManagement.addPlugin(sitePlugin);
        }

        Xpp3Dom configuration = (Xpp3Dom) sitePlugin.getConfiguration();

        if (configuration == null) {

        if (src != null) {
            PluginManagement tgt = target.getPluginManagement();
            if (tgt == null) {
                tgt = new PluginManagement();
                target.setPluginManagement(tgt);
            }
            mergePluginManagement(tgt, src, sourceDominant, context);
        }
    }

    protected void mergePluginContainer(