{"ast_node_type":"enum","tokens":[{"end":71,"kind":"keyword","start":0,"text":"///"}]}
    /// or to an enum variant depending on the result of this function.
    /// For example, `Self::A` could refer to an associated type
    fn probe_adt(&self, span: Span, ty: Ty<'tcx>) -> Option<ty::AdtDef<'tcx>>;