code: private boolean isLogConfigurationMessage(Throwable ex) {
  		if (ex instanceof InvocationTargetException) {
  			return isLogConfigurationMessage(ex.getCause());
  		}
  		String message = ex.getMessage();
  		if (message != null) {
  			for (String candidate : LOG_CONFIGURATION_MESSAGES) {
  				if (message.contains(candidate)) {
  					return true;
  				}
  			}
  		}
  		return false;
  	}
docs: Check if the exception is a log configuration message, i.e. the log call might not
  have actually output anything.
  @param ex the source exception
  @return {@code true} if the exception contains a log configuration message