public void setActiveContexts(java.util.Collection<ActiveContext> activeContexts) {
        if (activeContexts == null) {
            this.activeContexts = null;
            return;
        }

        this.activeContexts = new java.util.ArrayList<ActiveContext>(activeContexts);
    }
<p>
The contexts that are active in the turn.
</p>

@param activeContexts
       The contexts that are active in the turn.
aws-java-sdk-lexmodelsv2/src/main/java/com/amazonaws/services/lexmodelsv2/model/UserTurnOutputSpecification.java