public java.util.Date getStateTransitionedTimestamp() {
        return this.stateTransitionedTimestamp;
    }
<p>
The timestamp of the last change to the alarm's <code>StateValue</code>.
</p>

@return The timestamp of the last change to the alarm's <code>StateValue</code>.
aws-java-sdk-cloudwatch/src/main/java/com/amazonaws/services/cloudwatch/model/CompositeAlarm.java