{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"assert_then_stmts.push(self.cx.stmt_expr(panic));"}]}
        assert_then_stmts.push(self.cx.stmt_expr(panic));
        assert_then_stmts.extend(best_case_captures);
        let assert_then = self.cx.block(span, assert_then_stmts);