public MySQLSSLMode getMySQLSSLMode() throws GuacamoleException {
        return getProperty(
                MySQLGuacamoleProperties.MYSQL_SSL_MODE,
                DEFAULT_SSL_MODE);
    }
Return the MySQL SSL mode as configured in guacamole.properties, or the
default value of PREFERRED if not configured.

@return
    The SSL mode to use when connecting to the MySQL server.

@throws GuacamoleException
    If an error occurs retrieving the property value.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/java/org/apache/guacamole/auth/mysql/conf/MySQLEnvironment.java