public function save() {
		// phpcs:disable WordPress.Security.NonceVerification.Missing
		global $current_section;

		if ( ! $current_section ) {
			$settings = $this->get_settings();
			WC_Admin_Settings::save_fields( $settings );

			if ( isset( $_POST['woocommerce_tax_classes'] ) ) {
				$this->save_tax_classes( wp_unslash( $_POST['woocommerce_tax_classes'] ) ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
			}
		} elseif ( ! empty( $_POST['tax_rate_country'] ) ) {
			$this->save_tax_rates();
		}

		if ( $current_section ) {
			do_action( 'woocommerce_update_options_' . $this->id . '_' . $current_section );
		}

		// Invalidate caches.
		WC_Cache_Helper::invalidate_cache_group( 'taxes' );
		WC_Cache_Helper::get_transient_version( 'shipping', true );
		// phpcs:enable WordPress.Security.NonceVerification.Missing
	}