private static sun.misc.Unsafe getUnsafe() {
      try {
        return sun.misc.Unsafe.getUnsafe();
      } catch (SecurityException tryReflectionInstead) {
      }
      try {
        return java.security.AccessController.doPrivileged(
            new java.security.PrivilegedExceptionAction<sun.misc.Unsafe>() {
              @Override
              public sun.misc.Unsafe run() throws Exception {

   * to remove() will incorrectly throw an IllegalStateException, instead of removing the last
   * element returned.
   *
   * <p>See <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6529795">Sun bug 6529795</a>
   */
  static class IteratorWithSunJavaBug6529795<T> implements Iterator<T> {
    Iterator<T> iterator;
    boolean nextThrewException;

      </plugin>
      <plugin>
        <artifactId>maven-javadoc-plugin</artifactId>
        <configuration>
          <links>
            <link>http://java.sun.com/j2ee/1.4/docs/api</link>
            <link>http://java.sun.com/j2se/1.5.0/docs/api</link>
            <link>http://jakarta.apache.org/commons/collections/apidocs-COLLECTIONS_3_0/</link>
            <link>http://jakarta.apache.org/commons/dbcp/apidocs/</link>

  /**
   * Returns the JavaLangAccess class that is present in all Sun JDKs. It is not allowed in
   * AppEngine, and not present in non-Sun JDKs.
   */
  @SuppressWarnings("removal") // b/318391980
  @J2ktIncompatible
  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static Object getJLA() {
    try {
      /*
       * We load sun.misc.* classes using reflection since Android doesn't support these classes and

  /**
   * Returns the JavaLangAccess class that is present in all Sun JDKs. It is not allowed in
   * AppEngine, and not present in non-Sun JDKs.
   */
  @SuppressWarnings("removal") // b/318391980
  @J2ktIncompatible
  @GwtIncompatible // java.lang.reflect
  @CheckForNull
  private static Object getJLA() {
    try {
      /*
       * We load sun.misc.* classes using reflection since Android doesn't support these classes and

        byte[] keybytes = Hex.decode(key);
        byte[] javaChecksum;
        if ( keybytes.length == 16 ) {
            javaChecksum = sun.security.krb5.internal.crypto.Aes128.calculateChecksum(keybytes, usage, bytes, 0, bytes.length);

        }
        else {
            javaChecksum = sun.security.krb5.internal.crypto.Aes256.calculateChecksum(keybytes, usage, bytes, 0, bytes.length);
        }

   * tests of {@link CopyOnWriteArraySet} can suppress it with {@code
   * FeatureSpecificTestSuiteBuilder.suppressing()} until <a
   * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6570575">Sun bug 6570575</a> is fixed.
   */
  @J2ktIncompatible
  @GwtIncompatible // reflection
  public static Method getListIteratorFullyModifiableMethod() {

    // Not supported due to access checks on JDK 9+:
    // java.lang.reflect.InaccessibleObjectException: Unable to make member of class
    // sun.security.ssl.SSLSocketFactoryImpl accessible:  module java.base does not export
    // sun.security.ssl to unnamed module @xxx
    throw UnsupportedOperationException(
      "clientBuilder.sslSocketFactory(SSLSocketFactory) not supported on JDK 8 (>= 252) or JDK 9+",
    )

    val jakartaActivation = "com.sun.activation:jakarta.activation"
    val jakartaXmlBind = "jakarta.xml.bind:jakarta.xml.bind-api"
    val jansi = "org.fusesource.jansi:jansi"
    val jatl = "com.googlecode.jatl:jatl"
    val javaPoet = "com.squareup:javapoet"
    val jaxbCore = "com.sun.xml.bind:jaxb-core"
    val jaxbImpl = "com.sun.xml.bind:jaxb-impl"
    val jcifs = "jcifs:jcifs"

    }

    @Test
    void testEquals() {
        ToolchainModel tm1 = new ToolchainModel();
        tm1.setType("jdk");
        tm1.addProvide("version", "1.5");
        tm1.addProvide("vendor", "sun");
        Xpp3Dom configuration1 = new Xpp3Dom("configuration");
        Xpp3Dom jdkHome1 = new Xpp3Dom("jdkHome");
        jdkHome1.setValue("${env.JAVA_HOME}");
        configuration1.addChild(jdkHome1);