pub const End = union(Subtype) {
    end_entire: *const EndEntireDevicePath,
    end_this_instance: *const EndThisInstanceDevicePath,

    pub const Subtype = enum(u8) {
        end_entire = 0xff,
        end_this_instance = 0x01,
        _,
    };

    pub const EndEntireDevicePath = extern struct {
        type: DevicePath.Type,
        subtype: Subtype,
        length: u16 align(1),
    };

    comptime {
        assert(4 == @sizeOf(EndEntireDevicePath));
        assert(1 == @alignOf(EndEntireDevicePath));

        assert(0 == @offsetOf(EndEntireDevicePath, "type"));
        assert(1 == @offsetOf(EndEntireDevicePath, "subtype"));
        assert(2 == @offsetOf(EndEntireDevicePath, "length"));
    }

    pub const EndThisInstanceDevicePath = extern struct {
        type: DevicePath.Type,
        subtype: Subtype,
        length: u16 align(1),
    };

    comptime {
        assert(4 == @sizeOf(EndEntireDevicePath));
        assert(1 == @alignOf(EndEntireDevicePath));

        assert(0 == @offsetOf(EndEntireDevicePath, "type"));
        assert(1 == @offsetOf(EndEntireDevicePath, "subtype"));
        assert(2 == @offsetOf(EndEntireDevicePath, "length"));
    }
}