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/**
 * Creates an URLClassLoader from a _launcher JAR_ file in the given
 * slingHome directory and loads and returns the launcher class
 * identified by the launcherClassName.
 * @param launcherClassName The fully qualified name of a class
 *     implementing the Launcher interface. This class must have
 *     a public constructor taking no arguments.
 * @param slingHome The value to be used as ${slingHome}. This may
 *     be null in which case the sling folder in the current working
 *     directory is assumed. If this name is empty, the current working
 *     directory is assumed to be used as ${slingHome}.
 * @return the Launcher instance loaded from the newly created classloader
 * @throws NullPointerException if launcherClassName is null
 * @throws IllegalArgumentException if the launcherClassName cannot be
 *     instantiated. The cause of the failure is contained as the cause
 *     of the exception.
 */
public static Launcher loadLauncher(String launcherClassName, String slingHome);

/**
 * Tries to remove as many traces of class loaded by the framework from
 * the Java VM as possible. Most notably the following traces are removed:
 * <ul>
 * <li>JavaBeans property caches
 * <li>Java Logging caches
 * </ul>
 * <p>
 * This method must be called when the notifier is called.
 */
public static void cleanupVM();

// sets command line arguments, mainly used by the main class
public void setCommandLine(String[] args);

// starts the framework
public void start();

// stops the framework
// this method only returns when the framework has actually been stopped.
// this method may be used by the main class or servlet to initiate a
// shutdown of the framework
public void stop();