{"ast_node_type":"other","tokens":[{"end":46,"kind":"keyword","start":0,"text":"#[instrument(skip(self),"}]}
    #[instrument(skip(self), level = "debug")]
    /// Literals are eagerly converted to a constant, everything else becomes `Unevaluated`.
    fn lower_anon_const(&self, anon: &AnonConst) -> Const<'tcx> {