CKKeyValueCoding provides methods to access instance variables of the object. The methods try accessing instance variables by using accessor method. If it is failure, its try accessing directly.
If a class method "access_instance_variables?" defines in the class and the method returns "true", the direct access is success. Or failure.
Alias for retrieve_value
Alias for take_value
Retrieves value of the instance variable with method chain.
Sets value for the instance variable with method chain.