public Boolean isLocked() {
        return this.locked;
    }
<p>
A Boolean that indicates whether Backup Vault Lock is currently protecting the backup vault. <code>True</code>
means that Vault Lock causes delete or update operations on the recovery points stored in the vault to fail.
</p>

@return A Boolean that indicates whether Backup Vault Lock is currently protecting the backup vault.
        <code>True</code> means that Vault Lock causes delete or update operations on the recovery points stored
        in the vault to fail.
aws-java-sdk-backup/src/main/java/com/amazonaws/services/backup/model/DescribeBackupVaultResult.java