{"ast_node_type":"variable","tokens":[{"end":88,"kind":"keyword","start":0,"text":"let"}]}
                let blk = self.mk_block(thin_vec![stmt], BlockCheckMode::Default, span);
                let stmt = self.mk_stmt(span, StmtKind::Expr(expr));
                self.mk_expr(span, ExprKind::Block(blk, label))