Method

The operations, methods and display methods constitute the behavioral feature of a class. The methods and display methods implements the specification given by an operation or a constructor. A method or display method must be defined in the class in which its specification resides or in a subclass of this class. A method or display method can be overridden in the subclasses of the class.

A method contains actions written in the Xion language, and may or may not have side-effects.

Properties

A method has the same properties as the operation that it implements. According to the UML metamodel, changing the properties of an operation changes accordingly the proerties of all the methods that implement this operation.