public java.util.Date getExpirationDate() {
        return this.expirationDate;
    }
<p>
The date when this activation can no longer be used to register managed nodes.
</p>

@return The date when this activation can no longer be used to register managed nodes.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/Activation.java