public UserMatch withUser(MatchedUser user) {
        setUser(user);
        return this;
    }
<p>
Confidence in the match of this UserID with the input face.
</p>

@param user
       Confidence in the match of this UserID with the input face.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/UserMatch.java