/**
* Adds a certificate to the certificate chain.
+ * The order of certificates should be as follows: @n
+ * 1. User certificate.
+ * 2. Intermediate certificate.
+ * 3. Root CA certificate.
*
* @since 2.0
*
* @exception E_SUCCESS The method is successful.
* @exception E_OUT_OF_MEMORY The memory is insufficient.
* @exception E_INVALID_ARG The value of the specified @c nth is out of the valid range. @n
- * It must be less than GetLength().
+ * It must be less than the value retrieved by the GetLength() method.
* @exception E_OBJ_NOT_FOUND The certificate is not found.
* @exception E_SYSTEM A system error has occurred. @n
* The certificate list is empty.