{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"//"}]}
            // `T` is ZST. It can't have a drop flag, so the value here doesn't matter. We get
        let diff = if size_of::<T>() == 0 {
            // the number of zero-sized values in the last and only chunk, just out of caution.