public String getVersion() {
        return this.version;
    }
<p>
The unique identifier for the version of the message template to use for the message. If specified, this value
must match the identifier for an existing template version. To retrieve a list of versions and version
identifiers for a template, use the <link linkend="templates-template-name-template-type-versions">Template
Versions</link> resource.
</p>
<p>
If you don't specify a value for this property, Amazon Pinpoint uses the <i>active version</i> of the template.
The <i>active version</i> is typically the version of a template that's been most recently reviewed and approved
for use, depending on your workflow. It isn't necessarily the latest version of a template.
</p>

@return The unique identifier for the version of the message template to use for the message. If specified, this
        value must match the identifier for an existing template version. To retrieve a list of versions and
        version identifiers for a template, use the <link
        linkend="templates-template-name-template-type-versions">Template Versions</link> resource.</p>
        <p>
        If you don't specify a value for this property, Amazon Pinpoint uses the <i>active version</i> of the
        template. The <i>active version</i> is typically the version of a template that's been most recently
        reviewed and approved for use, depending on your workflow. It isn't necessarily the latest version of a
        template.
aws-java-sdk-pinpoint/src/main/java/com/amazonaws/services/pinpoint/model/Template.java