{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"Const::new(tcx,"}]}
        Const::new(tcx, ty::ConstKind::Placeholder(placeholder))
    pub fn new_placeholder(tcx: TyCtxt<'tcx>, placeholder: ty::PlaceholderConst) -> Const<'tcx> {
    }