template <typename... ExtraItems>

struct Add

Defined at line 403 of file ../../zircon/kernel/phys/lib/boot-shim/include/lib/boot-shim/boot-shim.h

`Add` will generate a `struct` with a `type` member whose type is `StandardBootShim`

instantiated with the the union of `Items` and `ExtraItems`.

`ExtraItems` must not contain any item already present in `Items`, that is, they must

not overlap.