{"ast_node_type":"function","tokens":[{"end":60,"kind":"keyword","start":0,"text":"fn"}]}
            fn check_block(a: &'tcx rustc_hir::Block<'tcx>);
            fn check_local(a: &'tcx rustc_hir::LetStmt<'tcx>);
            fn check_block_post(a: &'tcx rustc_hir::Block<'tcx>);