public MavenToolchainsXpp3Reader() {
        delegate = new MavenToolchainsStaxReader();
    }

    public MavenToolchainsXpp3Reader(ContentTransformer contentTransformer) {
        delegate = contentTransformer != null
                ? new MavenToolchainsStaxReader(contentTransformer::transform)
                : new MavenToolchainsStaxReader();
    }

    /**
     * Sets the state of the "add default entities" flag.
     *

    } // -- org.apache.maven.cli.internal.extension.model.io.xpp3.CoreExtensionsXpp3Reader()

    public CoreExtensionsXpp3Reader(ContentTransformer contentTransformer) {
        this.contentTransformer = contentTransformer;
    } // -- org.apache.maven.cli.internal.extension.model.io.xpp3.CoreExtensionsXpp3Reader(ContentTransformer)

    // -----------/
    // - Methods -/
    // -----------/

    /**
     * Method checkFieldWithDuplicate.

    private final SettingsStaxReader delegate;

    public SettingsXpp3Reader() {
        delegate = new SettingsStaxReader();
    }

    public SettingsXpp3Reader(ContentTransformer contentTransformer) {
        delegate = new SettingsStaxReader(contentTransformer::transform);
    }

    /**
     * Returns the state of the "add default entities" flag.
     *
     * @return boolean
     */

        assertEquals("trans-former_123#", specialNameTransformer.getName());
    }

    /**
     * Test ContentTransformer implementation
     */
    public void test_contentTransformer() {
        ContentTransformer transformer = new ContentTransformer("contentTransformer");
        transformer.addTransformationRule("old", "new");
        transformer.addTransformationRule("\\d+", "NUMBER");

              <exclude>org.apache.maven.model.io.xpp3.MavenXpp3Reader#contentTransformer</exclude>
              <exclude>org.apache.maven.model.io.xpp3.MavenXpp3Reader#read(org.codehaus.plexus.util.xml.pull.XmlPullParser,boolean):METHOD_REMOVED</exclude>
              <exclude>org.apache.maven.model.io.xpp3.MavenXpp3ReaderEx#contentTransformer</exclude>

        <artifactId>japicmp-maven-plugin</artifactId>
        <configuration>
          <parameter>
            <excludes>
              <exclude>org.apache.maven.settings.io.xpp3.SettingsXpp3Reader#contentTransformer</exclude>
              <exclude>org.apache.maven.settings.io.xpp3.SettingsXpp3Reader#read(org.codehaus.plexus.util.xml.pull.XmlPullParser,boolean):METHOD_REMOVED</exclude>
            </excludes>
          </parameter>