public String getNotebookVersion() {
        return this.notebookVersion;
    }
<p>
The notebook version. This value is supplied automatically for notebook sessions in the Athena console and is not
required for programmatic session access. The only valid notebook version is
<code>Athena notebook version 1</code>. If you specify a value for <code>NotebookVersion</code>, you must also
specify a value for <code>NotebookId</code>. See <a>EngineConfiguration$AdditionalConfigs</a>.
</p>

@return The notebook version. This value is supplied automatically for notebook sessions in the Athena console
        and is not required for programmatic session access. The only valid notebook version is
        <code>Athena notebook version 1</code>. If you specify a value for <code>NotebookVersion</code>, you must
        also specify a value for <code>NotebookId</code>. See <a>EngineConfiguration$AdditionalConfigs</a>.
aws-java-sdk-athena/src/main/java/com/amazonaws/services/athena/model/StartSessionRequest.java