public String getMYSQLServerRSAPublicKeyFile() throws GuacamoleException {
        return getProperty(MySQLGuacamoleProperties.MYSQL_SERVER_RSA_PUBLIC_KEY_FILE);
    }
Returns the absolute path to the public key for the server being connected to,
if any, or null if the configuration property is unset.

@return
    The absolute path to the public key for the server being connected to.

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