getDevicePath

    pub fn getDevicePath(self: *const DevicePath) ?uefi.DevicePath {
        const u_info = @typeInfo(uefi.DevicePath).@"union";
        inline for (u_info.field_names, u_info.field_types) |ufield_name, ufield_type| {
            const enum_value = std.meta.stringToEnum(uefi.DevicePath.Type, ufield_name);

            // Got the associated union type for self.type, now
            // we need to initialize it and its subtype
            if (self.type == enum_value) {
                const subtype = self.initSubtype(ufield_type);
                if (subtype) |sb| {
                    // e.g. return .{ .hardware = .{ .pci = @ptrCast(...) } }
                    return @unionInit(uefi.DevicePath, ufield_name, sb);
                }
            }
        }

        return null;
    }