syntax_data: {"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // overhead of stack growth by doing it outside the iteration.
context_before:         // Note that we *could* forward to `mirror_expr` for that, but we can consolidate the
context_after:         ensure_sufficient_stack(|| exprs.iter().map(|expr| self.mirror_expr_inner(expr)).collect())