public function load_options( string $options )
    {
        // get constants
        $reflect = new \ReflectionClass( $options );
        $options = $reflect->getConstants();

        // iterate needed params
        foreach ( $options as $option => $default ) {
            $key = strtolower( $option ); //
            $env = getenv( $option );
            $this->options[ $key ] = get_option( $key, $default );
            // overload env variables
            $this->options[ $key ] = ! $env ? $this->options[ $key ] : $env;
        }
    }