{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"///"}]}
        /// Whether the pattern scrutinee needs to be borrowed in order to call `Deref::deref` or
        subpattern: Box<Pat<'tcx>>,
        /// `DerefMut::deref_mut`, and if so, which. This is `ByRef::No` for deref patterns on