sitePlugin.setLocation("artifactId", location);
            PluginManagement pluginManagement = build.getPluginManagement();
            if (pluginManagement == null) {
                pluginManagement = new PluginManagement();
                build.setPluginManagement(pluginManagement);
            }
            pluginManagement.addPlugin(sitePlugin);
        }

/**
 * Tests {@code PluginManagement}.
 *
 */
class PluginManagementTest {

    @Test
    void testHashCodeNullSafe() {
        new PluginManagement().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new PluginManagement().equals(null));

        new PluginManagement().equals(new PluginManagement());
    }

    @Test

                assertFalse(result.contains("</plugins></pluginManagement>"), "Should not have malformed closing tags");

                // Check that proper indentation is maintained for pluginManagement
                assertTrue(
                        result.contains("        <pluginManagement>"), "PluginManagement should be properly indented");
                assertTrue(

        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) {
        for (Plugin plugin : plugins) {

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

        assertViolations(result, 2, 0, 0);

        assertEquals(
                "'build.pluginManagement.plugins.plugin.(groupId:artifactId)' groupId of a plugin must be defined. ",
                result.getFatals().get(0));

        assertEquals(

                    }
                }
            }

            // Check build/pluginManagement/plugins - these provide version management
            PluginManagement pluginManagement = build.getPluginManagement();
            if (pluginManagement != null) {
                for (Plugin plugin : pluginManagement.getPlugins()) {
                    String pluginKey = getPluginKey(plugin);

            Element root = editor.root();
            Element build = DomUtils.findChildElement(root, "build");
            Element pluginManagement = DomUtils.findChildElement(build, "pluginManagement");
            Element plugins = DomUtils.findChildElement(pluginManagement, "plugins");
            var pluginElements = plugins.children("plugin").toList();

        MavenProject project = createProject("group", "artifact", "1.0");

        Build build = project.getModel().getBuild();

        PluginManagement pMgmt = new PluginManagement();

        Plugin plugin = createPlugin("other.group", "other-artifact", "1.0");

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

        plugin.addDependency(dep);

		<version>15.4.0</version>
	</parent>
	<modules>
		<module>fess-crawler</module>
		<module>fess-crawler-lasta</module>
		<module>fess-crawler-opensearch</module>
	</modules>
	<build>
		<pluginManagement>
			<plugins>
				<plugin>
					<groupId>org.apache.maven.plugins</groupId>
					<artifactId>maven-shade-plugin</artifactId>
					<executions>
						<execution>
							<phase>package</phase>
							<goals>