public function card_icons() {
		$icons = [];
		$base_url = WC()->plugin_url() . '/assets/images/icons/credit-cards/';
		$base_dir = WC()->plugin_path() . '/assets/images/icons/credit-cards/';
		if ( is_dir( $base_dir ) ) {
			foreach ( scandir( $base_dir ) as $icon ) {
				if ( preg_match( '#(.*)\.svg$#', $icon, $matches ) ) {
					$icons[ $matches[1] ] = $base_url . $icon;
				}
			}
		}
		return $icons;
	}