@Override
    public String getIdentifier() {
        return "mysql-shared";
    }
Creates a new MySQLSharedAuthenticationProvider that provides access to
shared connections exposed by the MySQLAuthenticationProvider.

@throws GuacamoleException
    If a required property is missing, or an error occurs while parsing
    a property.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/java/org/apache/guacamole/auth/mysql/MySQLSharedAuthenticationProvider.java