macro_rules! impl_try_from_robj {
(&mut [$type:ty]) => { ... };
($(@generics<$generics:tt>)? $type:ty $(where $($where_clause:tt)*)?) => { ... };
}
macro_rules! impl_try_from_robj {
(&mut [$type:ty]) => { ... };
($(@generics<$generics:tt>)? $type:ty $(where $($where_clause:tt)*)?) => { ... };
}