public function read( &$coupon ) {
		$coupon->set_defaults();

		$post_object = get_post( $coupon->get_id() );

		if ( ! $coupon->get_id() || ! $post_object || 'shop_coupon' !== $post_object->post_type ) {
			throw new Exception( __( 'Invalid coupon.', 'woocommerce' ) );
		}

		$coupon_id = $coupon->get_id();
		$coupon->set_props(
			array(
				'code'                        => $post_object->post_title,
				'description'                 => $post_object->post_excerpt,
				'date_created'                => 0 < $post_object->post_date_gmt ? wc_string_to_timestamp( $post_object->post_date_gmt ) : null,
				'date_modified'               => 0 < $post_object->post_modified_gmt ? wc_string_to_timestamp( $post_object->post_modified_gmt ) : null,
				'date_expires'                => metadata_exists( 'post', $coupon_id, 'date_expires' ) ? get_post_meta( $coupon_id, 'date_expires', true ) : get_post_meta( $coupon_id, 'expiry_date', true ), // @todo: Migrate expiry_date meta to date_expires in upgrade routine.
				'discount_type'               => get_post_meta( $coupon_id, 'discount_type', true ),
				'amount'                      => get_post_meta( $coupon_id, 'coupon_amount', true ),
				'usage_count'                 => get_post_meta( $coupon_id, 'usage_count', true ),
				'individual_use'              => 'yes' === get_post_meta( $coupon_id, 'individual_use', true ),
				'product_ids'                 => array_filter( (array) explode( ',', get_post_meta( $coupon_id, 'product_ids', true ) ) ),
				'excluded_product_ids'        => array_filter( (array) explode( ',', get_post_meta( $coupon_id, 'exclude_product_ids', true ) ) ),
				'usage_limit'                 => get_post_meta( $coupon_id, 'usage_limit', true ),
				'usage_limit_per_user'        => get_post_meta( $coupon_id, 'usage_limit_per_user', true ),
				'limit_usage_to_x_items'      => 0 < get_post_meta( $coupon_id, 'limit_usage_to_x_items', true ) ? get_post_meta( $coupon_id, 'limit_usage_to_x_items', true ) : null,
				'free_shipping'               => 'yes' === get_post_meta( $coupon_id, 'free_shipping', true ),
				'product_categories'          => array_filter( (array) get_post_meta( $coupon_id, 'product_categories', true ) ),
				'excluded_product_categories' => array_filter( (array) get_post_meta( $coupon_id, 'exclude_product_categories', true ) ),
				'exclude_sale_items'          => 'yes' === get_post_meta( $coupon_id, 'exclude_sale_items', true ),
				'minimum_amount'              => get_post_meta( $coupon_id, 'minimum_amount', true ),
				'maximum_amount'              => get_post_meta( $coupon_id, 'maximum_amount', true ),
				'email_restrictions'          => array_filter( (array) get_post_meta( $coupon_id, 'customer_email', true ) ),
				'used_by'                     => array_filter( (array) get_post_meta( $coupon_id, '_used_by' ) ),
			)
		);
		$coupon->read_meta_data();
		$coupon->set_object_read( true );
		do_action( 'woocommerce_coupon_loaded', $coupon );
	}