code: public static boolean isMinValue(Progression model) {
  		if (model != null) {
  			return model.getValue() <= model.getMinimum();
  		}
  		return true;
  	}
docs: Replies if the given progression indicators has its value
  equal to its min value.
  
  @param model is the task progression to initialize.
  @return <code>true</code> if the indicator is at its min value or
  if {@code model} is <code>null</code>.