public DefinitionDocument getDefinition() {
        return this.definition;
    }
<p>
The <code>DefinitionDocument</code> that contains the updated system definition.
</p>

@return The <code>DefinitionDocument</code> that contains the updated system definition.
aws-java-sdk-iotthingsgraph/src/main/java/com/amazonaws/services/iotthingsgraph/model/UpdateSystemTemplateRequest.java