«Specification»
Stereotype of the Classifier metaclass of the UML standard profile.
Specification is a classifier that specifies a domain of objects without defining the physical implementation of those objects. For example, a Component stereotyped by «Specification» will only have provided and required interfaces, and is not intended to have any realizingClassifiers as part of its definition. This differs from «Type» because a «Type» can have features such as attributes and methods that are useful to analysts modeling systems.