public function update( &$token ) {
		if ( false === $token->validate() ) {
			throw new Exception( __( 'Invalid or missing payment token fields.', 'woocommerce' ) );
		}

		global $wpdb;

		$updated_props = array();
		$core_props    = array( 'gateway_id', 'token', 'user_id', 'type' );
		$changed_props = array_keys( $token->get_changes() );

		foreach ( $changed_props as $prop ) {
			if ( ! in_array( $prop, $core_props, true ) ) {
				continue;
			}
			$updated_props[]             = $prop;
			$payment_token_data[ $prop ] = $token->{'get_' . $prop}( 'edit' );
		}

		if ( ! empty( $payment_token_data ) ) {
			$wpdb->update(
				$wpdb->prefix . 'woocommerce_payment_tokens',
				$payment_token_data,
				array( 'token_id' => $token->get_id() )
			);
		}

		$updated_extra_props = $this->save_extra_data( $token );
		$updated_props       = array_merge( $updated_props, $updated_extra_props );
		$token->save_meta_data();
		$token->apply_changes();

		// Make sure all other tokens are not set to default.
		if ( $token->is_default() && $token->get_user_id() > 0 ) {
			WC_Payment_Tokens::set_users_default( $token->get_user_id(), $token->get_id() );
		}

		do_action( 'woocommerce_payment_token_object_updated_props', $token, $updated_props );
		do_action( 'woocommerce_payment_token_updated', $token->get_id() );
	}