code: public static Boolean getPropertyBoolean(Class<?> aClass, String key,
  			boolean aBool)
  	{
  		return getSettings().getPropertyBoolean(aClass, key, aBool);
  	}
docs: @param aClass the class name
  @param key the configuration key
  @param aBool default value
  
  @return aBool if the configuration value for the key is blank