UML14 — Namespace.contents

The current definition of the operation Namespace.contents is:

The operation "contents" results in a Set containing all ModelElements
contained by the Namespace.
contents : Set(ModelElement)
contents = self.ownedElement -> union(self.namespace, contents)

(UML Specification, version 1.4 page 2-64, version 1.3 page 2-55)

The last line of this definition seems wrong, since the "union" operation
must have a single parameter.

The former definition of this operation did not present any contradiction
between text and OCL expression:

The operation "contents" results in a Set containing all ModelElements
contained by the Namespace.
contents : Set(ModelElement)
contents = self.ownedElement

(UML Semantics, version 1.1 page 32)

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