Macro ambassador_impl_DeviceConfig 

macro_rules! ambassador_impl_DeviceConfig {
    (body_struct(< >, $ty:ty, $field_ident:tt)) => { ... };
    (
        body_struct(< >, $ty:ty, ($($ident_owned:tt)*), ($($ident_ref:tt)*),
        ($($ident_ref_mut:tt)*))
    ) => { ... };
    (resolve_path($err:literal, $(& $(mut)?)?, $s:ident . $field:ident $($t:tt)+)) => { ... };
    (
        resolve_path($err:literal, $(& $(mut $($emp:lifetime)?)?)?, $s:ident .
        $field:tt)
    ) => { ... };
    (resolve_path($err:literal, $(& $(mut)?)?, $s:ident .)) => { ... };
    (body_enum(< >, $ty:ty, ($($other_tys:ty),*), ($($variants:path),+))) => { ... };
    (body_self(< >)) => { ... };
    (use_assoc_ty_bounds) => { ... };
}

A macro to be used by [ambassador::Delegate] to delegate DeviceConfig