{"ast_node_type":"other","tokens":[{"end":76,"kind":"keyword","start":0,"text":"///"}]}
    /// have a place, and `UnOp(PtrMetadata, RawPtr(place))` is not a thing.
    /// This cannot be a `UnOp(PtrMetadata, _)` because that expects a value, and we only
    Len(Place<'tcx>),