public static void close(){
synchronized (INSTANCE_LOCK) {
    if (INSTANCE != null) {
      Logger innerLogger=INSTANCE.logger;
      cleanupLogger(innerLogger);
    }
    INSTANCE=null;
  }
}

public static void close ( ) { synchronized ( INSTANCE_LOCK ) { if ( INSTANCE != null ) { Logger innerLogger = INSTANCE . logger ; cleanupLogger ( innerLogger ) ; } INSTANCE = null ; } }
closes the current logwrapper .
