{"ast_node_type":"variable","tokens":[{"end":81,"kind":"keyword","start":0,"text":"let"}]}
        let (init_ty_hir_id, init) = match self.tcx.parent_hir_node(pat.hir_id) {
        };
            hir::Node::LetStmt(hir::LetStmt { ty: Some(ty), init, .. }) => (ty.hir_id, *init),