classifier
A model element that describes behavioral and structural features. Kinds of classifiers include actor, association, behavior, class, collaboration, component, data type, interface, node, signal, subsystem (as a stereotype), and use case. Classes are the most general kind of classifier. Others can be intuitively understood as similar to classes, with certain restrictions on content or usage, although each kind of classifier is represented by its own metamodel class. Most properties of classes apply to classifiers, in general, with certain restrictions for each kind of classifier.
See also static view.
Semantics
Classifier is an abstraction that includes several kinds of modeling elements that have structural and behavioral descriptions. ...
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