syntax_data: {"ast_node_type":"variable","tokens":[{"end":64,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let mut punycode_bytes = match punycode::encode(ident) {
context_before:         // FIXME(eddyb) we should probably roll our own punycode implementation.
context_after:             Ok(s) => s.into_bytes(),