https://dev.mysql.com/doc/dev/mysql-server/latest/namespaceBase64Alphabet_1_1detail.html
MySQL: Base64Alphabet::detail Namespace Reference
mysqldetailnamespacereference
https://dev.mysql.com/doc/dev/mysql-server/latest/classBase64Alphabet_1_1Crypt.html
MySQL: Base64Alphabet::Crypt Class Reference
mysqlcryptclassreference