code: private static void debug(String message, Throwable t) {
  	if (debugEnabled) {
  	    System.err.println("0 [Launcher] " + message);
  
  	    if (t != null) {
  		t.printStackTrace(System.err);
  	    }
  	}
      }
docs: Prints debug information if debug is enabled.
  
  @param message
  - Debug message.
  @param t
  - Instance of Throwable.