UML25 — Incomplete sentence

In Section 9.6.3 Operations block, there is an incomplete sentence in one of the paragraphs.
"
Different type-conformance systems adopt different schemes for how the types of parameters and results may vary when an Operation is redefined in a specialization. When the type may not vary, it is called invariance. When the parameter type may be specialized in a specialized type, it is called covariance. When the parameter type may be generalized in a specialized type, it is called contravariance. In UML, s"

As you can see the last sentence in the above paragraph is incomplete.

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