// Verify correct behavior for external parent:
            // - groupId should NOT be removed (external parents need groupId to be located)
            // - artifactId should NOT be removed (external parents need artifactId to be located)
            // - version should NOT be removed (external parents need version to be located)
            // This prevents the "parent.groupId is missing" error reported in issue #7934

        // Walk up the parent hierarchy
        Model currentModel = effectiveModel;
        while (currentModel.getParent() != null) {
            Parent parent = currentModel.getParent();

            // Check if this parent is in our local pomMap
            Path parentPath = findParentInPomMap(parent, pomMap);
            if (parentPath != null) {
                // Parent is local, so it becomes our new candidate

        .inOrder();
  }

  @AndroidIncompatible // Android forbids null parent ClassLoader
  public void testClassPathEntries_duplicateUri_parentWins() throws Exception {
    URL url = new URL("file:/a");
    URLClassLoader parent = new URLClassLoader(new URL[] {url}, null);
    URLClassLoader child = new URLClassLoader(new URL[] {url}, parent) {};

    }

    /**
     * Inserts a new child element to the given parent element with proper Maven POM ordering.
     *
     * @param name the name of the new element
     * @param parent the parent element
     * @return the new element
     *
     */
    public static Element insertNewElement(String name, Element parent) {
        PomEditor editor = new PomEditor(parent.document());
        return editor.insertMavenElement(parent, name);

    Path getRootDirectory();

    /**
     * Returns project parent project, if any.
     * <p>
     * Note that the model may have a parent defined, but an empty parent
     * project may be returned if the parent comes from a remote repository,
     * as a {@code Project} must refer to a buildable project.
     *
     * @return an optional containing the parent project
     * @see Model#getParent()
     */
    @Nonnull

        // Test with normal URLs
        String parentUrl = "http://example.com/parent";
        String url = "http://example.com/child";
        ContentNotFoundException exception = new ContentNotFoundException(parentUrl, url);

        assertNotNull(exception);
        assertEquals("Not Found: http://example.com/child Parent: http://example.com/parent", exception.getMessage());
        assertNull(exception.getCause());
    }

    @Test

                    context.detail("Removed: parent artifactId (can be inferred from relativePath)");
                    hasChanges = true;
                }
            }
        }

        return hasChanges;
    }

    /**
     * Determines if the parent is part of the same reactor (multi-module project)
     * vs. an external parent POM by checking if the parent exists in the pomMap.
     */

                        <version>1.0.0</version>
                    </parent>
                    <artifactId>child-project</artifactId>
                    <!-- groupId and version inherited from parent -->
                </project>
                """;

            Document document = Document.of(pomXml);
            UpgradeContext context = createMockContext();

    Path file = root().resolve("parent/nonexistent.file");
    Path parent = file.getParent();
    assertFalse(Files.exists(parent));
    assertThrows(IOException.class, () -> MoreFiles.createParentDirectories(file));
  }

  public void testCreateParentDirectories_nonDirectoryParentExists() throws IOException {
    Path parent = createTempFile();
    assertTrue(Files.isRegularFile(parent));
    Path file = parent.resolve("foo");

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.google.guava</groupId>
    <artifactId>guava-parent</artifactId>
    <version>999.0.0-HEAD-jre-SNAPSHOT</version>
  </parent>
  <artifactId>guava-tests</artifactId>
  <name>Guava Unit Tests</name>
  <description>
    The unit tests for the Guava libraries - separated into a