code: public void putSecretValue(final String secretId, final String clientRequestToken, final Key key, final Stage stage) {
          putSecretValue(secretId, clientRequestToken, singletonList(key), stage);
      }
docs: Store a single Fernet key in a secret. This requires the permission <code>secretsmanager:PutSecretValue</code>
  
  @param secretId
  the ARN of the secret
  @param clientRequestToken
  the secret version identifier
  @param key
  the key to store in the secret
  @param stage
  the stage with which to tag the version