public File getMySQLSSLTrustStore() throws GuacamoleException {
        return getProperty(MySQLGuacamoleProperties.MYSQL_SSL_TRUST_STORE);
    }
Returns the File where the trusted certificate store is located as
configured in guacamole.properties, or null if no value has been
configured.  The trusted certificate store is used to validate server
certificates when making SSL connections to MySQL servers.

@return
    The File where the trusted certificate store is located, or null
    if the value has not been configured.

@throws GuacamoleException
    If guacamole.properties cannot be parsed.
extensions/guacamole-auth-jdbc/modules/guacamole-auth-jdbc-mysql/src/main/java/org/apache/guacamole/auth/mysql/conf/MySQLEnvironment.java