AdrDevicePath

        pub const AdrDevicePath = extern struct {
            type: DevicePath.Type,
            subtype: Subtype,
            length: u16 align(1),
            adr: u32 align(1),

            // multiple adr entries can optionally follow
            pub fn adrs(self: *const AdrDevicePath) []align(1) const u32 {
                // self.length is a minimum of 8 with one adr which is size 4.
                const entries = (self.length - 4) / @sizeOf(u32);
                return @as([*]align(1) const u32, @ptrCast(&self.adr))[0..entries];
            }
        }