Initializes the VM: Runs all startup hooks that were registered during image building.
Startup hooks usually depend on option values, so it is recommended (but not required) that
all option values are set before calling this method.
Invoking this method more than once has no effect, i.e., startup hooks are only executed at
the first invocation.
public static void shutdown()
Shuts down the VM: Runs all shutdown hooks and waits for all finalization to complete.