private static final String BASE1_ID = "thegroup:base1:pom";
    private static final String BASE1_ID2 = "thegroup:base1:1";

    private static final String BASE1 = "<project>\n" + "  <modelVersion>4.0.0</modelVersion>\n"
            + "  <groupId>thegroup</groupId>\n"
            + "  <artifactId>base1</artifactId>\n"
            + "  <version>1</version>\n"
            + "  <packaging>pom</packaging>\n"

/**
 * Handles deserialization of toolchains from the default textual format.
 *
 * @since 3.3.0
 * @deprecated since 4.0.0, use {@link MavenToolchainsStaxReader} instead
 */
@Named
@Singleton
@Deprecated(since = "4.0.0")
public class DefaultToolchainsReader implements ToolchainsReader {

    @Override

 *   <li><strong>4.0.0 → 4.1.0</strong>: Upgrades Maven 3.x POMs to Maven 4.1.0 format</li>
 * </ul>
 *
 * <h3>4.0.0 → 4.1.0 Upgrade Process</h3>
 * <ol>
 *   <li><strong>Namespace Update</strong>: Changes namespace from Maven 4.0.0 to 4.1.0 for all elements</li>
 *   <li><strong>Schema Location Update</strong>: Updates xsi:schemaLocation to Maven 4.1.0 XSD</li>

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>t07-c</artifactId>
  <packaging>jar</packaging>
  <version>1.0</version>
  <dependencies>
    <dependency>
      <groupId>maven-test</groupId>
      <artifactId>t07-d</artifactId>
      <version>1.1</version>
      <type>jar</type>
      <scope>compile</scope>
      <optional>true</optional>
    </dependency>
  </dependencies>

 * of sessions, use {@link CloseableSession#close()} method on built instance(s).
 * <p>
 * Extend this class and override methods to customize, if needed.
 *
 * @since 4.0.0
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")
public class MavenSessionBuilderSupplier implements Supplier<SessionBuilder> {
    protected final RepositorySystem repositorySystem;

/**
 * Maven GA level metadata generator.
 *
 * Version metadata contains list of existing baseVersions within this GA.
 *
 * @deprecated since 4.0.0, use {@code maven-api-impl} jar instead
 */
@Deprecated(since = "4.0.0")
class VersionsMetadataGenerator implements MetadataGenerator {

    private final Map<Object, VersionsMetadata> versions;

import java.io.IOException;

/**
 * Signals a failure to parse the settings due to invalid syntax (e.g. non well-formed XML or unknown elements).
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.xml.SettingsXmlFactory} instead
 */
@Deprecated(since = "4.0.0")
public class SettingsParseException extends IOException {

    /**
     * The one-based index of the line containing the error.
     */

import org.apache.maven.settings.Settings;

/**
 * Handles serialization of settings into some kind of textual format like XML.
 *
 * @deprecated since 4.0.0, use {@link org.apache.maven.api.services.xml.SettingsXmlFactory} instead
 */
@Deprecated(since = "4.0.0")
public interface SettingsWriter {

    /**
     * Writes the supplied settings to the specified file. Any non-existing parent directories of the output file will

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven</groupId>
  <artifactId>p0</artifactId>
  <packaging>pom</packaging>
  <version>1.0</version>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <executions>
          <execution>
            <id>test</id>

            <!--  The key to this test... -->

<project>
  <modelVersion>4.0.0</modelVersion>
  <groupId>maven-test</groupId>
  <artifactId>t08-a</artifactId>
  <packaging>jar</packaging>
  <version>1.0</version>
  <repositories>
    <repository>
      <id>central</id>
      <name>Fake Maven Central Repository</name>
      <url>file://dummy</url>
    </repository>
  </repositories>
  <dependencies>
    <dependency>
      <groupId>maven-test</groupId>