public String getVersion() {
        return this.version;
    }
<p>
The version of this activity.
</p>
<note>
<p>
The combination of activity type name and version must be unique with in a domain.
</p>
</note>

@return The version of this activity.</p> <note>
        <p>
        The combination of activity type name and version must be unique with in a domain.
        </p>
aws-java-sdk-simpleworkflow/src/main/java/com/amazonaws/services/simpleworkflow/model/ActivityType.java