|Represents a node that is passed as an argument to a method.
|A node representing a set of equivalent nodes.
|Represents a field declaration in the program.
|Represents a method declaration in the program.
|An abstract node within the SWUM model
|Represents a phrase, consisting of one or more words.
|Represents an abstract program element.
|Represents a type within a program.
|Represents a variable declaration in the program.
|A node representing a single word.