syntax_data: {"ast_node_type":"other","tokens":[{"end":48,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:             // to allow `deref!("..."): String`.
context_before:             // String literal patterns may have type `str` if `deref_patterns` is enabled, in order
context_after:             let str_bytes = s.as_str().as_bytes();