syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // only access these while the arena is still alive.
context_before:         // SAFETY: we can extend the arena allocation to `'static` because we
context_after:         let byte_str: &'static [u8] = unsafe { &*(byte_str as *const [u8]) };