public void setCreationDate(String creationDate) {
        this.creationDate = creationDate;
    }
<p>
The date, in ISO 8601 format, when the message template was created.
</p>

@param creationDate
       The date, in ISO 8601 format, when the message template was created.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/PushNotificationTemplateResponse.java